c++学生信息管理系统
请问问题出在哪里呢运行不出来，望得到正确代码
#include<iostream>
#include<list>
#include<windows.h>
using namespace std;
//定义结构体
typedef struct
{
string name;
int age;
string sex;
string id;
string phone;
}student;
list<student> stulist;
list<student>::iterator stu;
int Select()
{
int select;
cout << "\n输入选择：****************0.上一级****************1.继续****************"<<endl;
cin>>select;
return select;
}
//录入信息
void inputStudent()
{
cout <<"\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话"<<endl;
Student data;
cin >>data.name>>data.age>>data.sex>>data.id>>data.phone;
stulist.push_back(data);
int select = Select();
loop1:
if (select==0);
else if (select==1)
inputStudent();
else{
cout <<"错误请重新输入:";
cin>>select;
goto loop1;
}
return;
}
//浏览信息
void printfStudent()
{
cout <<"\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话"<<endl;
for (stu = stulist.begin(); stu!=stulist.end(); stu++)
cout<<(*stu).name<<"\t\t"<<(*stu).age<<"\t\t"<<(*stu).sex
<<"\t\t"<<(*stu).id<<"\t"<<(*stu).phone
<<endl;
int select=Select();
loop1:
if (select==0);
else if (select==1)
printfStudent();
else{
cout <<"错误请重新输入:";
cin>>select;
goto loop1;
}
}
//修改信息
void changeStudent()
{
string str;
bool f=true;
cout<<"请输入需要修改信息的学生姓名:\n";
cin>>str;
for (stu = stulist.begin(); stu!=stulist.end(); stu++)
if(str==(*stu).name)
{
cout<<"请输入需要修改后的学生信息:\n";
cout <<"\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话"<<endl;
Student data;
cin>>data.name>>data.age>>data.sex>>data.id>>data.phone;
*stu=data;
cout<<"已修改";
f=!f;
}
if(f)
cout <<"不存在该信息！"<<endl;
int select =Select();
loop1:
if(select==0);
else if (select==1)
changeStudent();
else
{
cout<<"发生错误，请重新输入:";
cin>>select;
goto loop1;
}
return;
}
//删除信息
void delectStudent()
{
string str;
bool f=true;
cout<<"\n请输入需要删除信息的学生姓名:\n";
cin>>str;
for (stu = stulist.begin(); stu!=stulist.end(); stu++)
if(str==(*stu).name)
{
stulist.erase(stu);
cout<<"\n已删除";
f=!f;
break;
}
if(f)
cout <<"\n不存在该信息！"<<endl;
int select =Select();
loop1:
if(select==0);
else if (select==1)
deleteStudent();
else
{
cout<<"选择错误，请重新输入:";
cin>>select;
goto loop1;
}
return;
}
//查找信息
void searchStudent()
{
string str;
bool f=true;
cout<<"\n请输入需要查找信息的学生姓名:\n";
cin>>str;
for (stu = stulist.begin(); stu!=stulist.end(); stu++)
if(str==(*stu).name)
{
cout <<"\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话"<<endl;
cout<<(*stu).name<<"\t\t"<<(*stu).age<<"\t\t"<<(*stu).sex
<<"\t\t"<<(*stu).id<<"\t"<<(*stu).phone
<<endl;
f=!f;
break;
}
if(f)
cout <<"未查到该信息！"<<endl;
int select =Select();
loop1:
if(select==0);
else if (select==1)
searchStudent();
else
{
cout<<"选择错误，请重新输入:";
cin>>select;
goto loop1;
}
return;
}
//设计菜单页面
void menu()
{
cout << "\n 学生信息管理系统\n\n"
<<"*************************************************************************************\n\n"
<<"\t\t\t\t0.退出系统\n\n"
<<"\t\t\t\t1.录入信息\n\n"
<<"\t\t\t\t2.浏览信息\n\n"
<<"\t\t\t\t3.修改信息\n\n"
<<"\t\t\t\t4.删除信息\n\n"
<<"\t\t\t\t5.查找信息\n\n"
<<"***************************************************************************************\n";
}
void keydown()
{
int choice{0};
cin>>choice;
switch (choice)
{
case 0:
exit(0);
break;
case 1:
system("cls");
cout <<"\n****************************【录入信息】**********************************\n";
inputStudent();
break;
case 2:
system("cls");
cout <<"\n****************************【浏览信息】**********************************\n";
printfStudent();
break;
case 3:
system("cls");
cout <<"\n****************************【改变信息】**********************************\n";
changeStudent();
break;
case 4:
system("cls");
cout <<"\n****************************【修改信息】**********************************\n";
deleteStudent();
break;
case 5:
system("cls");
cout <<"\n****************************【查找信息】**********************************\n";
searchStudent();
break;
default:
cout<<"错误，请重新输入\n";
system("pause");
break;
}
}
int main()
{
system("color F0");
while (1)
{
system("cls");
menu();
keydown();
}
system("pause");
return 0;
}
#include<iostream>
#include<list>
#include<windows.h>
#include <string>
#include <fstream>
#include <vector>
#include <algorithm>
using namespace std;
//定义结构体
typedef struct Stude
{
string name;
int age;
string sex;
string id;
string phone;
}student;
list<student> stulist;
list<student>::iterator stu;
int Select()
{
int select;
cout << "\n输入选择：****************0.上一级****************1.继续****************" << endl;
cin >> select;
return select;
}
//录入信息
void inputStudent()
{
cout << "\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话" << endl;
student data;
cin >> data.name >> data.age >> data.sex >> data.id >> data.phone;
stulist.push_back(data);
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
inputStudent();
else {
cout << "错误请重新输入:";
cin >> select;
goto loop1;
}
return;
}
//浏览信息
void printfStudent()
{
cout << "\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话" << endl;
for (stu = stulist.begin(); stu != stulist.end(); stu++)
cout << (*stu).name << "\t\t" << (*stu).age << "\t\t" << (*stu).sex
<< "\t\t" << (*stu).id << "\t" << (*stu).phone
<< endl;
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
printfStudent();
else {
cout << "错误请重新输入:";
cin >> select;
goto loop1;
}
}
//修改信息
void changeStudent()
{
string str;
bool f = true;
cout << "请输入需要修改信息的学生姓名:\n";
cin >> str;
for (stu = stulist.begin(); stu != stulist.end(); stu++)
if (str == (*stu).name)
{
cout << "请输入需要修改后的学生信息:\n";
cout << "\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话" << endl;
student data;
cin >> data.name >> data.age >> data.sex >> data.id >> data.phone;
*stu = data;
cout << "已修改";
f = !f;
}
if (f)
cout << "不存在该信息！" << endl;
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
changeStudent();
else
{
cout << "发生错误，请重新输入:";
cin >> select;
goto loop1;
}
return;
}
//删除信息
void delectStudent()
{
string str;
bool f = true;
cout << "\n请输入需要删除信息的学生姓名:\n";
cin >> str;
for (stu = stulist.begin(); stu != stulist.end(); stu++)
if (str == (*stu).name)
{
stulist.erase(stu);
cout << "\n已删除";
f = !f;
break;
}
if (f)
cout << "\n不存在该信息！" << endl;
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
delectStudent();
else
{
cout << "选择错误，请重新输入:";
cin >> select;
goto loop1;
}
return;
}
//查找信息
void searchStudent()
{
string str;
bool f = true;
cout << "\n请输入需要查找信息的学生姓名:\n";
cin >> str;
for (stu = stulist.begin(); stu != stulist.end(); stu++)
if (str == (*stu).name)
{
cout << "\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话" << endl;
cout << (*stu).name << "\t\t" << (*stu).age << "\t\t" << (*stu).sex
<< "\t\t" << (*stu).id << "\t" << (*stu).phone
<< endl;
f = !f;
break;
}
if (f)
cout << "未查到该信息！" << endl;
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
searchStudent();
else
{
cout << "选择错误，请重新输入:";
cin >> select;
goto loop1;
}
return;
}
//设计菜单页面
void menu()
{
cout << "\n 学生信息管理系统\n\n"
<< "*************************************************************************************\n\n"
<< "\t\t\t\t0.退出系统\n\n"
<< "\t\t\t\t1.录入信息\n\n"
<< "\t\t\t\t2.浏览信息\n\n"
<< "\t\t\t\t3.修改信息\n\n"
<< "\t\t\t\t4.删除信息\n\n"
<< "\t\t\t\t5.查找信息\n\n"
<< "***************************************************************************************\n";
}
void keydown()
{
int choice{ 0 };
cin >> choice;
switch (choice)
{
case 0:
exit(0);
break;
case 1:
system("cls");
cout << "\n****************************【录入信息】**********************************\n";
inputStudent();
break;
case 2:
system("cls");
cout << "\n****************************【浏览信息】**********************************\n";
printfStudent();
break;
case 3:
system("cls");
cout << "\n****************************【改变信息】**********************************\n";
changeStudent();
break;
case 4:
system("cls");
cout << "\n****************************【修改信息】**********************************\n";
delectStudent();
break;
case 5:
system("cls");
cout << "\n****************************【查找信息】**********************************\n";
searchStudent();
break;
default:
cout << "错误，请重新输入\n";
system("pause");
break;
}
}
int main()
{
system("color F0");
while (1)
{
system("cls");
menu();
keydown();
}
system("pause");
return 0;
}
报错 信息是什么
代码不是你自己写的吧，我觉得是你直接复制网上的，但是缺少了windows.h头文件库
#include<iostream>
#include<list>
#include<windows.h>
using namespace std;
//定义结构体
typedef struct
{
string name;
int age;
string sex;
string id;
string phone;
}student;
list<student> stulist;
list<student>::iterator stu;
void delectStudent();
int Select()
{
int select;
cout << "\n输入选择：****************0.上一级****************1.继续****************" << endl;
cin >> select;
return select;
}
//录入信息
void inputStudent()
{
cout << "\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话" << endl;
student data;
cin >> data.name >> data.age >> data.sex >> data.id >> data.phone;
stulist.push_back(data);
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
inputStudent();
else {
cout << "错误请重新输入:";
cin >> select;
goto loop1;
}
return;
}
//浏览信息
void printfStudent()
{
cout << "\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话" << endl;
for (stu = stulist.begin(); stu != stulist.end(); stu++)
cout << (*stu).name << "\t\t" << (*stu).age << "\t\t" << (*stu).sex
<< "\t\t" << (*stu).id << "\t" << (*stu).phone
<< endl;
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
printfStudent();
else {
cout << "错误请重新输入:";
cin >> select;
goto loop1;
}
}
//修改信息
void changeStudent()
{
string str;
bool f = true;
cout << "请输入需要修改信息的学生姓名:\n";
cin >> str;
for (stu = stulist.begin(); stu != stulist.end(); stu++)
if (str == (*stu).name)
{
cout << "请输入需要修改后的学生信息:\n";
cout << "\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话" << endl;
student data;
cin >> data.name >> data.age >> data.sex >> data.id >> data.phone;
*stu = data;
cout << "已修改";
f = !f;
}
if (f)
cout << "不存在该信息！" << endl;
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
changeStudent();
else
{
cout << "发生错误，请重新输入:";
cin >> select;
goto loop1;
}
return;
}
//删除信息
void deleteStudent()
{
string str;
bool f = true;
cout << "\n请输入需要删除信息的学生姓名:\n";
cin >> str;
for (stu = stulist.begin(); stu != stulist.end(); stu++)
if (str == (*stu).name)
{
stulist.erase(stu);
cout << "\n已删除";
f = !f;
break;
}
if (f)
cout << "\n不存在该信息！" << endl;
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
deleteStudent();
else
{
cout << "选择错误，请重新输入:";
cin >> select;
goto loop1;
}
return;
}
//查找信息
void searchStudent()
{
string str;
bool f = true;
cout << "\n请输入需要查找信息的学生姓名:\n";
cin >> str;
for (stu = stulist.begin(); stu != stulist.end(); stu++)
if (str == (*stu).name)
{
cout << "\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话" << endl;
cout << (*stu).name << "\t\t" << (*stu).age << "\t\t" << (*stu).sex
<< "\t\t" << (*stu).id << "\t" << (*stu).phone
<< endl;
f = !f;
break;
}
if (f)
cout << "未查到该信息！" << endl;
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
searchStudent();
else
{
cout << "选择错误，请重新输入:";
cin >> select;
goto loop1;
}
return;
}
//设计菜单页面
void menu()
{
cout << "\n 学生信息管理系统\n\n"
<< "*************************************************************************************\n\n"
<< "\t\t\t\t0.退出系统\n\n"
<< "\t\t\t\t1.录入信息\n\n"
<< "\t\t\t\t2.浏览信息\n\n"
<< "\t\t\t\t3.修改信息\n\n"
<< "\t\t\t\t4.删除信息\n\n"
<< "\t\t\t\t5.查找信息\n\n"
<< "***************************************************************************************\n";
}
void keydown()
{
int choice{ 0 };
cin >> choice;
switch (choice)
{
case 0:
exit(0);
break;
case 1:
system("cls");
cout << "\n****************************【录入信息】**********************************\n";
inputStudent();
break;
case 2:
system("cls");
cout << "\n****************************【浏览信息】**********************************\n";
printfStudent();
break;
case 3:
system("cls");
cout << "\n****************************【改变信息】**********************************\n";
changeStudent();
break;
case 4:
system("cls");
cout << "\n****************************【修改信息】**********************************\n";
deleteStudent();
break;
case 5:
system("cls");
cout << "\n****************************【查找信息】**********************************\n";
searchStudent();
break;
default:
cout << "错误，请重新输入\n";
system("pause");
break;
}
}
int main()
{
system("color F0");
while (1)
{
system("cls");
menu();
keydown();
}
system("pause");
return 0;
}
有多个错误，1、首先你的student大小写不一致，2、deletestudent拼写错误了，3、头文件包含缺失。针对错误都做了修复，
参考如下代码：
// VCConsole.cpp : 定义控制台应用程序的入口点。
//
#include <string>
#include<iostream>
#include<list>
#include<windows.h>
using namespace std;
//定义结构体
typedef struct
{
string name;
int age;
string sex;
string id;
string phone;
}Student;
list<Student> stulist;
list<Student>::iterator stu;
int Select()
{
int select;
cout << "\n输入选择：****************0.上一级****************1.继续****************" << endl;
cin >> select;
return select;
}
//录入信息
void inputStudent()
{
cout << "\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话" << endl;
Student data;
cin >> data.name >> data.age >> data.sex >> data.id >> data.phone;
stulist.push_back(data);
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
inputStudent();
else {
cout << "错误请重新输入:";
cin >> select;
goto loop1;
}
return;
}
//浏览信息
void printfStudent()
{
cout << "\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话" << endl;
for (stu = stulist.begin(); stu != stulist.end(); stu++)
cout << (*stu).name << "\t\t" << (*stu).age << "\t\t" << (*stu).sex
<< "\t\t" << (*stu).id << "\t" << (*stu).phone
<< endl;
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
printfStudent();
else {
cout << "错误请重新输入:";
cin >> select;
goto loop1;
}
}
//修改信息
void changeStudent()
{
string str;
bool f = true;
cout << "请输入需要修改信息的学生姓名:\n";
cin >> str;
for (stu = stulist.begin(); stu != stulist.end(); stu++)
if (str == (*stu).name)
{
cout << "请输入需要修改后的学生信息:\n";
cout << "\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话" << endl;
Student data;
cin >> data.name >> data.age >> data.sex >> data.id >> data.phone;
*stu = data;
cout << "已修改";
f = !f;
}
if (f)
cout << "不存在该信息！" << endl;
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
changeStudent();
else
{
cout << "发生错误，请重新输入:";
cin >> select;
goto loop1;
}
return;
}
//删除信息
void deleteStudent()
{
string str;
bool f = true;
cout << "\n请输入需要删除信息的学生姓名:\n";
cin >> str;
for (stu = stulist.begin(); stu != stulist.end(); stu++)
if (str == (*stu).name)
{
stulist.erase(stu);
cout << "\n已删除";
f = !f;
break;
}
if (f)
cout << "\n不存在该信息！" << endl;
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
deleteStudent();
else
{
cout << "选择错误，请重新输入:";
cin >> select;
goto loop1;
}
return;
}
//查找信息
void searchStudent()
{
string str;
bool f = true;
cout << "\n请输入需要查找信息的学生姓名:\n";
cin >> str;
for (stu = stulist.begin(); stu != stulist.end(); stu++)
if (str == (*stu).name)
{
cout << "\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话" << endl;
cout << (*stu).name << "\t\t" << (*stu).age << "\t\t" << (*stu).sex
<< "\t\t" << (*stu).id << "\t" << (*stu).phone
<< endl;
f = !f;
break;
}
if (f)
cout << "未查到该信息！" << endl;
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
searchStudent();
else
{
cout << "选择错误，请重新输入:";
cin >> select;
goto loop1;
}
return;
}
//设计菜单页面
void menu()
{
cout << "\n 学生信息管理系统\n\n"
<< "*************************************************************************************\n\n"
<< "\t\t\t\t0.退出系统\n\n"
<< "\t\t\t\t1.录入信息\n\n"
<< "\t\t\t\t2.浏览信息\n\n"
<< "\t\t\t\t3.修改信息\n\n"
<< "\t\t\t\t4.删除信息\n\n"
<< "\t\t\t\t5.查找信息\n\n"
<< "***************************************************************************************\n";
}
void keydown()
{
int choice{ 0 };
cin >> choice;
switch (choice)
{
case 0:
exit(0);
break;
case 1:
system("cls");
cout << "\n****************************【录入信息】**********************************\n";
inputStudent();
break;
case 2:
system("cls");
cout << "\n****************************【浏览信息】**********************************\n";
printfStudent();
break;
case 3:
system("cls");
cout << "\n****************************【改变信息】**********************************\n";
changeStudent();
break;
case 4:
system("cls");
cout << "\n****************************【修改信息】**********************************\n";
//deleteStudent();
break;
case 5:
system("cls");
cout << "\n****************************【查找信息】**********************************\n";
searchStudent();
break;
default:
cout << "错误，请重新输入\n";
system("pause");
break;
}
}
int main()
{
system("color F0");
while (1)
{
system("cls");
menu();
keydown();
}
system("pause");
return 0;
}
采用chatgpt：
运行结果：
修改后代码如下：
#include<iostream>
#include<list>
#include<windows.h>
#include <string>
#include <iostream>
#include <fstream>
#include <vector>
#include <algorithm>
using namespace std;
// Define struct
typedef struct
{
string name;
int age;
string sex;
string id;
string phone;
} student;
list<student> stulist;
list<student>::iterator stu;
int Select()
{
int select;
cout << "\n输入选择：****************0.上一级****************1.继续****************" << endl;
cin >> select;
return select;
}
// 录入信息
void inputStudent()
{
cout << "\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话" << endl;
student data; // Changed from Student data;
cin >> data.name >> data.age >> data.sex >> data.id >> data.phone;
stulist.push_back(data);
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
inputStudent();
else {
cout << "错误请重新输入:";
cin >> select;
goto loop1;
}
return;
}
// 浏览信息
void printfStudent()
{
cout << "\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话" << endl;
for (stu = stulist.begin(); stu != stulist.end(); stu++)
cout << (*stu).name << "\t\t" << (*stu).age << "\t\t" << (*stu).sex
<< "\t\t" << (*stu).id << "\t" << (*stu).phone
<< endl;
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
printfStudent();
else {
cout << "错误请重新输入:";
cin >> select;
goto loop1;
}
}
// 修改信息
void changeStudent()
{
string str;
bool f = true;
cout << "请输入需要修改信息的学生姓名:\n";
cin >> str;
for (stu = stulist.begin(); stu != stulist.end(); stu++)
if (str == (*stu).name)
{
cout << "请输入需要修改后的学生信息:\n";
cout << "\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话" << endl;
student data; // Changed from Student data;
cin >> data.name >> data.age >> data.sex >> data.id >> data.phone;
*stu = data;
cout << "已修改";
f = !f;
}
if (f)
cout << "不存在该信息！" << endl;
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
changeStudent();
else {
cout << "发生错误，请重新输入:";
cin >> select;
goto loop1;
}
return;
}
// 删除信息
void delectStudent() // Changed from deleteStudent()
{
string str;
bool f = true;
cout << "\n请输入需要删除信息的学生姓名:\n";
cin >> str;
for (stu = stulist.begin(); stu != stulist.end(); stu++)
if (str == (*stu).name)
{
stulist.erase(stu);
cout << "\n已删除";
f = !f;
break;
}
if (f)
cout << "\n不存在该信息！" << endl;
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
delectStudent(); // Changed from deleteStudent()
else {
cout << "选择错误，请重新输入:";
cin >> select;
goto loop1;
}
return;
}
// 查找信息
void searchStudent()
{
string str;
bool f = true;
cout << "\n请输入需要查找信息的学生姓名:\n";
cin >> str;
for (stu = stulist.begin(); stu != stulist.end(); stu++)
if (str == (*stu).name)
{
cout << "\n姓名\t\t年龄\t\t性别\t\t学号\t\t电话" << endl;
cout << (*stu).name << "\t\t" << (*stu).age << "\t\t" << (*stu).sex
<< "\t\t" << (*stu).id << "\t" << (*stu).phone
<< endl;
f = !f;
break;
}
if (f)
cout << "未查到该信息！" << endl;
int select = Select();
loop1:
if (select == 0);
else if (select == 1)
searchStudent();
else {
cout << "选择错误，请重新输入:";
cin >> select;
goto loop1;
}
return;
}
// 设计菜单页面
void menu()
{
cout << "\n 学生信息管理系统\n\n"
<< "*************************************************************************************\n\n"
<< "\t\t\t\t0.退出系统\n\n"
<< "\t\t\t\t1.录入信息\n\n"
<< "\t\t\t\t2.浏览信息\n\n"
<< "\t\t\t\t3.修改信息\n\n"
<< "\t\t\t\t4.删除信息\n\n"
<< "\t\t\t\t5.查找信息\n\n"
<< "***************************************************************************************\n";
}
void keydown()
{
int choice{ 0 };
cin >> choice;
switch (choice)
{
case 0:
exit(0);
break;
case 1:
system("cls");
cout << "\n****************************【录入信息】**********************************\n";
inputStudent();
break;
case 2:
system("cls");
cout << "\n****************************【浏览信息】**********************************\n";
printfStudent();
break;
case 3:
system("cls");
cout << "\n****************************【改变信息】**********************************\n";
changeStudent();
break;
case 4:
system("cls");
cout << "\n****************************【修改信息】**********************************\n";
delectStudent(); // Changed from deleteStudent()
break;
case 5:
system("cls");
cout << "\n****************************【查找信息】**********************************\n";
searchStudent();
break;
default:
cout << "错误，请重新输入\n";
system("pause");
break;
}
}
int main()
{
system("color F0");
while (1)
{
system("cls");
menu();
keydown();
}
system("pause");
return 0;
}
把头文件包加上就好
不知道你这个问题是否已经解决, 如果还没有解决的话:- 帮你找了个相似的问题, 你可以看下: https://ask.csdn.net/questions/7713597
- 你也可以参考下这篇文章：C++ 数学与算法系列之牛顿、二分迭代法求解非线性方程
- 您还可以看一下 夏曹俊老师的C++微服务架构及安全云盘项目实训课程中的 完成了客户端的文件上传指令处理小节, 巩固相关知识点
- 除此之外, 这篇博客: c++实现学生信息管理系统中的 概要设计（包括数据结构及算法绘制流程图或伪代码表示） 部分也许能够解决你的问题, 你可以仔细阅读以下内容或跳转源博客中阅读:
2.1数据结构
利用结构体存储学生信息
数组存储学生的三门课成绩
String存储学号，姓名，性别
2.2算法流程图
2.2.1整体设计流程图
2.2.2部分关键算法流程图
如果你已经解决了该问题, 非常希望你能够分享一下解决方案, 写成博客, 将相关链接放在评论区, 以帮助更多的人 ^-^
c++实现学生信息管理系统
#include<iostream>
#include<fstream>
#include<cstring>
#include<conio.h>
#include<string>
using namespace std;
//-------------------Student类-------------------//
class Student
{
public:
char name[10];
char sex[5];
char ID[20];
double CPP; //c++得分
double MATH; //数学得分
double ENGLISH; //英语得分
double sum; //所得总分
int rank; //学生排名
// double avcpp; //c++平均成绩
// double avmath; //数学平均成绩
// double aveng; //英语平均成绩
// double avsum; //总分平均成绩
Student *Next;
void Input(); //Input( )函数输入学生信息及成绩
void ReadFile(istream &in); //ReadFile( )函数读取文件内容
void Show1(); //Show( )函数显示学生信息(for Display1)
void Show2(); //Show( )函数显示学生信息(for Display2)
};
//---------------Student类函数实现---------------//
void Student::Input()
{
cout << "\t\t 请输入学生姓名： "; cin >> name;
cout << "\t\t 请输入学生性别： "; cin >> sex;
cout << "\t\t 请输入学生的学号： "; cin >> ID;
cout << "\t\t 请输入c++课程成绩： "; cin >> CPP;
cout << "\t\t 请输入数学课程成绩： "; cin >> MATH;
cout << "\t\t 请输入英语课程成绩： "; cin >> ENGLISH;
sum = CPP + MATH + ENGLISH;
}
void Student::ReadFile(istream &in)
{
in >> name >> sex >> ID >> CPP >> MATH >> ENGLISH >> sum >> rank;
}
void Student::Show1()
{
/* bool flag = true;
if (flag)
{
cout << "姓名: \t\t" << "性别: \t\t" << "学号: \t\t"
<< "C++: \t" << "数学: \t" << "英语：\t"
<< " 总成绩: \t" << "\n\n";
flag = false;
}*/
cout << name << "\t\t" << sex << "\t\t"
<< ID << "\t" << CPP << "\t" << MATH << "\t"
<< ENGLISH << "\t" << sum << "\n\n";
}
void Student::Show2()
{
/* bool flag = true;
if (flag)
{
cout << "姓名: \t\t" << "性别: \t\t" << "学号: \t\t"
<< " 总成绩: \t" << "排名: " << "\n\n";
flag = false;
}*/
cout << name << "\t\t" << sex << "\t\t"
<< ID << "\t " << sum << "\t\t" << rank << "\n\n";
}
//-----------------------------------------------------------------------------------//
//-------------------Studentmessage类-------------------//
class Studentmassage
{
public:
Studentmassage();
~Studentmassage();
void ShowMenu();
void Find();
void Save();
void ModifyItem();
void RemoveItem();
void Swap(Student *, Student *);
void Sort();
int ListCount();
void Average();
void Display1();
void Display2();
void AddItem();
private:
Student *head, *end;
ifstream in;
ofstream out;
Student *FindItem(char *name) //通过姓名查找
{
for (Student *p = head; p->Next != end; p = p->Next)
if (!strcmp(p->Next->name, name)) return p;
return NULL;
}
Student *FindID(char *ID) //通过学号查找
{
for (Student *p = head; p->Next != end; p = p->Next)
if (!strcmp(p->Next->ID, ID)) return p;
return NULL;
}
};
//-------------------------------Studentmessage类函数实现-------------------------------//
//-------------------菜单-------------------//
void Studentmassage::ShowMenu()
{
cout << "\t\t**********************************************************************************" << endl;
cout << "\t\t\t〒〒〒〒〒〒〒〒〒〒 ☆ 学生成绩管理系统 ☆ 〒〒〒〒〒〒〒〒〒〒" << endl;
cout << "\t\t〒〒〒〒〒〒〒★★★★★ ★★★★★★★〒〒〒〒〒〒〒" << endl;
cout << "\t\t〒〒〒〒〒〒〒〒〒★ ☆ 1.读入学生信息 ☆ ★〒〒〒〒〒〒〒〒〒" << endl;
cout << "\t\t〒〒〒〒〒〒〒〒〒★ ☆ 2.保存学生信息 ☆ ★〒〒〒〒〒〒〒〒〒" << endl;
cout << "\t\t〒〒〒〒〒〒〒〒〒★ ☆ 3.添加学生信息 ☆ ★〒〒〒〒〒〒〒〒〒" << endl;
cout << "\t\t〒〒〒〒〒〒〒〒〒★ ☆ 4.显示学生成绩(不含排名)☆ ★〒〒〒〒〒〒〒〒〒" << endl;
cout << "\t\t〒〒〒〒〒〒〒〒〒★ ☆ 5.显示学生成绩(不含排名)☆ ★〒〒〒〒〒〒〒〒〒" << endl;
// cout << "\t\t〒〒〒〒〒〒〒〒〒★ ☆ 6.排序统计成绩 ☆ ★〒〒〒〒〒〒〒〒〒" << endl;
cout << "\t\t〒〒〒〒〒〒〒〒〒★ ☆ 6.查看平均成绩 ☆ ★〒〒〒〒〒〒〒〒〒" << endl;
cout << "\t\t〒〒〒〒〒〒〒〒〒★ ☆ 7.查找学生成绩 ☆ ★〒〒〒〒〒〒〒〒〒" << endl;
cout << "\t\t〒〒〒〒〒〒〒〒〒★ ☆ 8.删除学生成绩 ☆ ★〒〒〒〒〒〒〒〒〒" << endl;
cout << "\t\t〒〒〒〒〒〒〒〒〒★ ☆ 9.修改学生信息 ☆ ★〒〒〒〒〒〒〒〒〒" << endl;
cout << "\t\t〒〒〒〒〒〒〒〒〒★ ☆ 10.清空学生信息 ☆ ★〒〒〒〒〒〒〒〒〒" << endl;
cout << "\t\t〒〒〒〒〒〒〒〒〒★ ☆ 0.安全退出系统 ☆ ★〒〒〒〒〒〒〒〒〒" << endl;
cout << "\t\t\t\t系统中规定male为男性，fama为女性，请按该格式进行输入！！！" << endl;
cout << "\t\t**********************************************************************************" << endl;
cout << "\t\t\n\t\t →请选择相应的数字进行操作: ";
}
//-------------------1.Studentmessage构造函数-------------------//
Studentmassage::Studentmassage() //构造函数
{
head = new Student;
head->Next = new Student;
end = head->Next;
in.open("sort.txt");
if (!in) cout << "这是一个新系统，无学生信息，请先输入。" << endl;
else
{
while (!in.eof())
{
end->ReadFile(in);
if (end->name[0] == '\0') break;
end->Next = new Student;
end = end->Next;
}
in.close();
cout << "\t\t 读取学生信息成功！" << endl;
}
}
//-------------------2.保存信息至文件中-------------------//
void Studentmassage::Save()
{
out.open("sort.txt");
for (Student *p = head->Next; p != end; p = p->Next)
{
out << p->name << "\t" << p->ID << "\t" << p->CPP << "\t" << p->MATH << "\t" << p->ENGLISH << "\t" << p->sum << p->rank << "\t" << endl;
}
out.close();
}
//-------------------3.添加新的学生信息-------------------//
void Studentmassage::AddItem()
{
end->Input();
// scpp += end->CPP;
// smath += end->MATH;
// seng += end->ENGLISH;
end->Next = new Student;
end = end->Next;
cout << "添加成功！" << endl;
system("pause");
// cout << "请输入任意字符！继续......";
// getchar();
}
//-------------------4.输出信息-------------------//
void Studentmassage::Display1()
{
cout << "姓名: \t\t" << "性别: \t\t" << "学号: \t\t"
<< "C++: \t" << "数学: \t" << "英语：\t"
<< " 总成绩: \t" << "\n\n";
for (Student*p = head->Next; p != end; p = p->Next)
p->Show1();
system("pause");
// cout << "输入任意字符！继续······";
// getchar();
}
//-------------------5.输出只有总成绩和排名的信息-------------------//
void Studentmassage::Display2()
{
Sort();
cout << "姓名: \t\t" << "性别: \t\t" << "学号: \t\t"
<< " 总成绩: \t" << "排名: " << "\n\n";
for (Student*p = head->Next; p != end; p = p->Next)
p->Show2();
system("pause");
// cout << "输入任意字符！继续······";
// getchar();
}
//-------------------6.计算各科平均成绩-------------------//
void Studentmassage::Average()
{
double scpp = 0.0, smath = 0.0, seng = 0.0, ssum = 0.0;
int c = 0, m = 0, e = 0; //记录各科不及格人数
Student *p;
for (p = head->Next; p->Next != end; p = p->Next)
{
scpp += p->CPP; smath += p->MATH; seng += p->ENGLISH; ssum += p->sum;
if (p->CPP < 60) c++;
if (p->MATH < 60) m++;
if (p->ENGLISH < 60) e++;
// cout << p->CPP << endl;
}
scpp += p->CPP; smath += p->MATH; seng += p->ENGLISH; ssum += p->sum;
int num = Studentmassage::ListCount();
// cout << num << endl;
double avcpp = scpp / num; //c++平均成绩
double avmath = smath / num; //数学平均成绩
double aveng = seng / num; //英语平均成绩
double avsum = ssum / num; //总分平均成绩
double procpp = (num - c) / num; //c++及格率
double promath = (num - m) / num; //数学及格率
double proeng = (num - e) / num; //英语及格率
// cout << scpp << "\t" << smath << "\t" << seng << "\t" << ssum << "\n";
cout << "\n\t\t*********************************\n";
cout << "\t\t※ 0.输出各项平均成绩\n";
cout << "\t\t※ 1.输出c++平均成绩 \n\t\t※ 2.输出数学平均成绩 \n";
cout << "\t\t※ 3.输出英语平均成绩 \n\t\t※ 4.输出总平均成绩 \n";
cout << "\t\t※ 5.输出各科及格率";
cout << "\n\t\t*********************************\n";
char flag = 'n';
do
{
cout << "\t\t →请选择相应的数字进行操作:： ";
int x; cin >> x;
switch (x)
{
case 0: {
cout << "\t\tc++平均成绩\t" << "数学平均成绩\t" << "英语平均成绩\t" << "总平均成绩\t\n";
cout << "\t\t" << avcpp << "\t\t" << avmath << "\t\t" << aveng << "\t\t" << avsum << "\n\n"; break;
}
case 1:cout << "\t\tc++平均成绩 : " << avcpp << "\n\n"; break;
case 2:cout << "\t\t数学平均成绩 : " << avmath << "\n\n"; break;
case 3:cout << "\t\t英语平均成绩 : " << aveng << "\n\n"; break;
case 4:cout << "\t\t总平均成绩 : " << avsum << "\n\n"; break;
case 5:
{
cout << "\t\tc++及格率\t" << "数学及格率\t" << "英语及格率\t" << "\n\n";
cout << "\t\t" << procpp * 100 << "%" << "\t\t" << promath * 100 << "%"
<< "\t\t" << proeng * 100 << "%" << "\t\t" << "\n\n"; break;
}
}
cout << "\t\t请问是否要继续查询？(y/n) : ";
cin >> flag;
} while (flag == 'y');
system("pause");
}
//-------------------7.查找函数-------------------//
void Studentmassage::Find()
{
char c = 'n';
do
{
char name[10], ID[20];
Student *p = NULL;
cout << "\n\t\t*********************************\n";
cout << "\t\t※ 1.按学生的姓名查找 \n\t\t※ 2.按学生学号查找 ";
cout << "\n\t\t*********************************\n 请选择： ";
int x;
cin >> x;
switch (x)
{
case 1:
{
cout << "\t\t 请输入要查找学生姓名： ";
cin >> name;
if (p = FindItem(name))
{
p->Next->Show1();
// cout << "输入任意字符！继续······ \n";
// getchar();
}
else
{
cout << "\t\t 没有找到相匹配的学生！ " << "\n\n";
// cout << "请输入任意字符！继续······";
// getchar();
}
} break;
case 2:
{
cout << "\t\t 请输入要查找的学生的学号： "; cin >> ID;
if (p = FindID(ID))
{
p->Next->Show1();
// cout << " 输入任意字符！继续…… ";
// getchar();
}
else
{
cout << "\t\t 没有找到相匹配的学生！ " << '\n' << endl;
// cout << " 输入任意字符！继续…… ";
// getchar();
}
} break;
}
cout << "\t\t请问是否要继续查找？(y/n) : ";
cin >> c;
} while (c == 'y');
system("pause");
}
//-------------------8.删除函数-------------------//
void Studentmassage::RemoveItem()
{
char c = 'n';
do
{
char name[20];
Student *p = NULL, *temp = NULL;
cout << "\t\t 请输入要删除学生的姓名 ：" << endl; cin >> name;
if (p = FindItem(name))
{
temp = p->Next;
p->Next = p->Next->Next;
delete temp;
cout << "\t\t 删除成功！" << endl;
// cout << "输入任意字符！继续······";
// getchar();
}
else
{
cout << "\t\t 没有找到！" << endl;
// cout << "输入任意字符！继续······";
// getchar();
}
cout << "\t\t请问是否要继续删除？(y/n) : ";
cin >> c;
} while (c == 'y');
system("pause");
}
//-------------------9.修改函数-------------------//
void Studentmassage::ModifyItem()
{
char c = 'n';
do
{
char name[10];
Student *p = NULL;
cout << "\t\t 请输入需要修改人的姓名 ："; cin >> name;
if (p = FindItem(name))
{
cout << "\t\t 已找到该学生信息，请按步骤输入新的信息！" << endl;
p->Next->Input();
cout << "修改成功！ " << endl;
// cout << "请输入任意字符！继续······";
// getchar();
}
else
{
cout << "\t\t 没有找到！" << endl;
// cout << "请输入任意字符！继续······";
// getchar();
}
cout << "\t\t请问是否要继续修改？(y/n) : ";
cin >> c;
} while (c == 'y');
system("pause");
}
//-------------------10.Studentmessage析构函数-------------------//
Studentmassage::~Studentmassage()
{
Save();
Student *temp;
// cout << head->Next->CPP << "\n";
for (; head->Next != end;)
{
temp = head->Next;
// cout << temp->CPP << "\t";
head->Next = head->Next->Next;
delete temp;
}
// cout << endl << head->CPP;
delete head;
delete end;
system("pause");
}
//-------------------记录当前链表总数并返回一个整数-------------------//
int Studentmassage::ListCount()
{
if (!head) return 0;
int n = 0;
for (Student *p = head->Next; p != end; p = p->Next) n++;
return n;
}
//-------------------交换Student类的两个变量-------------------//
void Studentmassage::Swap(Student *p1, Student *p2)
{
Student *temp = new Student;
strcpy(temp->name, p1->name);
strcpy(temp->sex, p1->sex);
strcpy(temp->ID, p1->ID);
temp->CPP = p1->CPP;
temp->MATH = p1->MATH;
temp->ENGLISH = p1->ENGLISH;
temp->sum = p1->sum;
strcpy(p1->name, p2->name);
strcpy(p1->sex, p2->sex);
strcpy(p1->ID, p2->ID);
p1->CPP = p2->CPP;
p1->MATH = p2->MATH;
p1->ENGLISH = p2->ENGLISH;
p1->sum = p2->sum;
strcpy(p2->name, temp->name);
strcpy(p2->sex, temp->sex);
strcpy(p2->ID, temp->ID);
p2->CPP = temp->CPP;
p2->MATH = temp->MATH;
p2->ENGLISH = temp->ENGLISH;
p2->sum = temp->sum;
}
//-------------------对当前链表进行排序-------------------//
void Studentmassage::Sort()
{
cout << "Sorting..." << endl;
Student *p = NULL, *p1 = NULL, *k = NULL;
int n = Studentmassage::ListCount();
if (n < 2) return;
for (p = head->Next; p != end; p = p->Next)
for (k = p->Next; k != end; k = k->Next)
{
if (p->sum < k->sum) Studentmassage::Swap(p, k);
}
int i = 1;
for (p = head->Next; p != end; p = p->Next)
{
p->rank = i++;
}
cout << "排序完成！" << endl;
system("pause");
// getchar();
return;
}
//-----------------------------------------------------------------------------------//
int main()
{
int x, i = 0;
bool quit = false;
cout << "\t\t §§§§§§§§§§§§§§§§§§§§§§§§§§ \n" << endl;
Studentmassage Grade;
system("pause");
// cout << "\t\t按任意键开始······";
// getchar();
while (!quit)
{
Grade.ShowMenu();
cin >> x;
switch (x)
{
case 0:exit(0); break;
case 1:Grade.Studentmassage::Studentmassage(); break;
case 2:Grade.Save(); break;
case 3:Grade.AddItem(); break;
case 4:Grade.Display1(); break;
case 5:Grade.Display2(); break;
// case 6:Grade.Sort(); break;
case 6:Grade.Average(); break;
case 7:Grade.Find(); break;
case 8:Grade.RemoveItem(); break;
case 9:Grade.ModifyItem(); break;
case 10:Grade.~Studentmassage(); break;
}
}
return 0;
}
//计算平均成绩有问题(解决)
//序号选择应添加筛错选项
//Student类应在添加性别选项
//析构函数第一个数据无法删除
//清空链表后Student类Show函数出现异常