c++运行时出现问题
用visualstudio的时候运行不了，但是源代码是没问题的，可不可以在自己电脑上试一下给个解决方案，有偿
#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<stdlib.h>
#include<string.h>
struct Student { //每个学生对应一个结构体
char ID[20];//学号
char Name[10];//姓名
float Mark1;//语文成绩
float Mark2;//数学成绩
float Mark3;//英语成绩
float Mark4;//计算机成绩
float All; //总分
float Average;//平均成绩
}students[1000];
int num = 0; //计数器
void Copy(struct Student* arr, int i, int j)
{
strcpy_s(arr[i].ID, arr[j].ID);
strcpy_s(arr[i].Name, arr[j].Name);
arr[i].Mark1 = arr[j].Mark1;
arr[i].Mark2 = arr[j].Mark2;
arr[i].Mark3 = arr[j].Mark3;
arr[i].Mark4 = arr[j].Mark4;
arr[i].All = arr[j].All;
arr[i].Average = arr[j].Average;
}
int Student_SearchByName(char name[])//通过姓名来检索学生
{
int i;
for (i = 0; i < num; i++)
{
if (strcmp(students[i].Name, name) == 0) //通过strcmp函数来对比学生姓名，找到返回在数组的位置
{
return i;
}
}
return -1; //未找到返回 -1
}
int Student_SearchByIndex(char id[])//通过学号来检索学生信息
{
int i;
for (i = 0; i < num; i++)
{
if (strcmp(students[i].ID, id) == 0) //通过strcmp函数来对比学生id，找到返回位置
{
return i;
}
}
return -1; //未找到返回 -1
}
void Student_DisplaySingle(int index)//输出表头
{
printf("%10s%10s%8s%8s%8s%10s\n", "学号", "姓名", "语文", "数学", "英语", "计算机", "总成绩", "平均成绩");
printf("-------------------------------------------------------------\n");
printf("%10s%10s%8.2f%8.2f%8.2f%8.2f%10.2f%10.2f\n", students[index].ID, students[index].Name,
students[index].Mark1, students[index].Mark2, students[index].Mark3, students[index].Mark4, students[index].All, students[index].Average);
}
void inputt()//利用循环录入学生信息
{
while (1)
{
printf("请输入学号:");
scanf_s("%s", &students[num].ID);
getchar();
printf("请输入姓名:");
scanf_s("%s", &students[num].Name);
getchar();
printf("请输入成绩:");
scanf_s("%f", &students[num].Mark1);
getchar();
printf("请输入成绩:");
scanf_s("%f", &students[num].Mark2);
getchar();
printf("请输入成绩:");
scanf_s("%f", &students[num].Mark3);
getchar();
printf("请输入成绩:");
scanf_s("%f", &students[num].Mark4); //依次输入各项数据
getchar();
students[num].All = students[num].Mark1 + students[num].Mark2 + students[num].Mark3 + students[num].Mark4; //输完数据后自动计算总成绩与平均成绩
students[num].Average = (students[num].Mark1 + students[num].Mark2 + students[num].Mark3 + students[num].Mark4) / 4;
if (Student_SearchByIndex(students[num].ID) == -1)
{
num++; //移向下一个位置
}
else
{
printf("学号重复，输入数据无效 !!!\n");
}
printf("是否继续?(y/n)");
if (getchar() == 'n')
{
break;
}
}
}
void modify()//修改成绩
{
while (1)
{
char id[20];
int index;
printf("请输入要修改的学生的学号:");
scanf_s("%s", &id);
getchar();
index = Student_SearchByIndex(id); //调用搜查id函数，根据其返回值确定位置
if (index == -1)
{
printf("学生不存在!\n");
}
else
{
printf("你要修改的学生信息为:\n");
Student_DisplaySingle(index);
printf("-- 请输入新值--\n");
printf("请输入学号:");
scanf_s("%s", &students[index].ID);
getchar();
printf("请输入姓名:");
scanf_s("%s", &students[index].Name);
getchar();
printf("请输入语文成绩:");
scanf_s("%f", &students[index].Mark1);
getchar();
printf("%f", &students[index].Mark2);
getchar();
printf("请输入英语成绩:");
scanf_s("%f", &students[index].Mark3);
getchar();
printf("请输入计算机成绩:");
scanf_s("%f", &students[index].Mark4); //重新录入一套新的数据替代
getchar();
students[index].All = students[index].Mark1 + students[index].Mark2 + students[index].Mark3 + students[index].Mark4;
students[index].Average = (students[index].Mark1 + students[index].Mark2 + students[index].Mark3 + students[index].Mark4) / 4;
}
printf("是否继续?(y/n)");
if (getchar() == 'n')
{
break;
}
}
}
void deletee()//删除学生信息
{
int i;
while (1)
{
char id[20];
int index;
printf("请输入要删除的学生的学号:");
scanf_s("%s", &id);
getchar();
index = Student_SearchByIndex(id); //调用搜查id函数，根据其返回值确定位置
if (index == -1)
{
printf("学生不存在!\n");
}
else
{
printf("你要删除的学生信息为:\n");
Student_DisplaySingle(index);
printf("是否真的要删除?(y/n)");
if (getchar() == 'y')
{
for (i = index; i < num - 1; i++)
{
Copy(students, i, i + 1);
//students[i]=students[i+1]; //把后边的对象都向前移动
}
num--;
}
getchar();
}
printf("是否继续?(y/n)");
if (getchar() == 'n')
{
break;
}
}
}
void display()//打印已录入的学生信息
{
int a;
printf("%10s%10s%8s%8s%8s%8s%10s%10s\n", "学号", "姓名", "语文", "数学", "英语", "计算机", "总成绩", "平均成绩");
printf("-------------------------------------------------------------\n");
for (a = 0; a < num; a++)
{
printf("%10s%10s%8.2f%8.2f%8.2f%8.2f%10.2f%10.2f\n", students[a].ID, students[a].Name,
students[a].Mark1, students[a].Mark2, students[a].Mark3, students[a].Mark4, students[a].All, students[a].Average);
}
}
void insert()//指定位置插入学生信息
{
int a, b, c;
printf("请输入你要插入的位置");
scanf_s("%d", &a);
if (a > num) {
printf("输入的位置有误，请重新输入,当前共%d条数据\n", num);
scanf_s("%d", &a);
}
b = num - 1;
for (; b >= a - 1; b--)
{
//strcpy(students[b+1].ID,students[b].ID);
//strcpy(students[b+1].Name,students[b].Name);
//students[b+1].Mark1=students[b].Mark1;
//students[b+1].Mark2=students[b].Mark2;
//students[b+1].Mark3=students[b].Mark3;
//students[b+1].Mark4=students[b].Mark4;
//students[b+1].All=students[b].All;
//students[b+1].Average=students[b].Average;
Copy(students, b + 1, b); //根据其输入的位置，将其及以后的数据向后移动一个位置
}
num++;
printf("请输入学号:");
scanf_s("%s", &students[a - 1].ID);
getchar();
printf("请输入姓名:");
scanf_s("%s", &students[a - 1].Name);
getchar();
printf("请输入语文成绩:");
scanf_s("%f", &students[a - 1].Mark1);
getchar();
printf("请输入数学成绩:");
scanf_s("%f", &students[a - 1].Mark2);
getchar();
printf("请输入英语成绩:");
scanf_s("%f", &students[a - 1].Mark3);
getchar();
printf("请输入计算机成绩:");
scanf_s("%f", &students[a - 1].Mark4); //输入新数据
getchar();
students[a - 1].All = students[a - 1].Mark1 + students[a - 1].Mark2 + students[a - 1].Mark3 + students[a - 1].Mark4;
students[a - 1].Average = (students[a - 1].Mark1 + students[a - 1].Mark2 + students[a - 1].Mark3 + students[a - 1].Mark4) / 4;
}
void search()//查询学生信息
{
while (1)
{
char name[20];
int index;
printf("请输入要查询的学生的姓名:");
scanf_s("%s", &name);
getchar();
index = Student_SearchByName(name); //调用搜查name函数，根据其返回值确定位置
if (index == -1)
{
printf("学生不存在!\n");
}
else
{
printf("你要查询的学生信息为:\n");
Student_DisplaySingle(index);
}
printf("是否继续?(y/n)");
if (getchar() == 'n')
{
break;
}
}
}
void sort()//根据平均分排序
{
int i, j;
//struct students tmp;
for (i = 0; i < num; i++)
{
students[i].Average = (students[i].Mark1 + students[i].Mark2 + students[i].Mark3 + students[i].Mark4) / 4;
}
for (i = 0; i < num; i++)
{
for (j = 1; j < num - i; j++)
{
if (students[j - 1].Average < students[j].Average)
{
Copy(students, num, j - 1);
Copy(students, j - 1, j);
Copy(students, j, num);
//tmp=students[j-1];
//students[j-1]=students[j];
//students[j]=tmp; //冒泡排序
}
}
}
int a;
printf("%10s%10s%8s%8s%8s%10s\n", "学号", "姓名", "语文", "数学", "英语", "计算机", "总成绩", "平均成绩");
printf("-------------------------------------------------------------\n");
for (a = 0; a < num; a++)
{
printf("%10s%10s%8.2f%8.2f%8.2f%8.2f%10.2f%10.2f\n", students[a].ID, students[a].Name,
students[a].Mark1, students[a].Mark2, students[a].Mark3, students[a].Mark4, students[a].All, students[a].Average);
}
}
void SearchLow()//搜索不及格的并输出
{
int a;
printf(" 语文不及格的有%10s%10s%8s\n", "学号", "姓名", "语文");
for (a = 0; a < num; a++)
{
if (students[a].Mark1 < 60)
printf("%10s%10s%8.2f\n", students[a].Name, students[a].ID, students[a].Mark1); //从头搜索到尾，若小于60就输出
}
printf(" 数学不及格的有%10s%10s%8s\n", "学号", "姓名", "数学");
for (a = 0; a < num; a++)
{
if (students[a].Mark2 < 60)
printf("%10s%10s%8.2f\n", students[a].Name, students[a].ID, students[a].Mark2);
}
printf(" 英语不及格的有%10s%10s%8s\n", "学号", "姓名", "英语");
for (a = 0; a < num; a++)
{
if (students[a].Mark3 < 60)
printf("%10s%10s%8.2f\n", students[a].Name, students[a].ID, students[a].Mark3);
}
printf(" 计算机不及格的有%10s%10s%8s\n", "学号", "姓名", "计算机");
for (a = 0; a < num; a++)
{
if (students[a].Mark4 < 60)
printf("%10s%10s%8.2f\n", students[a].Name, students[a].ID, students[a].Mark4);
}
system("pause");
}
void SearchHigh()//搜索成绩最高者输出
{
int a;
int max;
printf(" 语文最高分为%10s%10s%8s\n", "学号", "姓名", "语文");
max = students[0].Mark1;
for (a = 1; a < num; a++)
{
if (students[a].Mark1 > max)
max = students[a].Mark1;
}
for (a = 0; a < num; a++)
{
if (max == students[a].Mark1)
printf("%10s%10s%8.2f\n", students[a].Name, students[a].ID, students[a].Mark1);
}
printf(" 数学最高分为%10s%10s%8s\n", "学号", "姓名", "数学");
max = students[0].Mark2;
for (a = 1; a < num; a++)
{
if (students[a].Mark2 > max)
max = students[a].Mark2;
}
for (a = 0; a < num; a++)
{
if (max == students[a].Mark2)
printf("%10s%10s%8.2f\n", students[a].Name, students[a].ID, students[a].Mark2);
}
printf(" 英语最高分为%10s%10s%8s\n", "学号", "姓名", "英语");
max = students[0].Mark3;
for (a = 1; a < num; a++)
{
if (students[a].Mark3 > max)
max = students[a].Mark3;
}
for (a = 0; a < num; a++)
{
if (max == students[a].Mark3)
printf(" %10s%10s%8.2f\n", students[a].Name, students[a].ID, students[a].Mark3);
}
printf(" 计算机最高分为%10s%10s%8s\n", "学号", "姓名", "计算机");
max = students[0].Mark4;
for (a = 1; a < num; a++)
{
if (students[a].Mark4 > max)
max = students[a].Mark4;
}
for (a = 0; a < num; a++)
{
if (max == students[a].Mark4)
printf(" %10s%10s%8.2f\n", students[a].Name, students[a].ID, students[a].Mark4);
}
system("pause");
}
void Save()
{
FILE* fp = fopen("temp.txt", "w+");
fprintf(fp, "%d\n", num);
for (int i = 0; i < num; i++)
{
fprintf(fp, "%s %s %f %f %f %f %f %f\n", students[i].ID, students[i].Name, students[i].Mark1, students[i].Mark2, students[i].Mark3, students[i].Mark4, students[i].All, students[i].Average);
}
fclose(fp);
}
void Load()
{
FILE* fp = fopen("temp.txt", "r");
fscanf_s(fp, "%d", &num);
for (int i = 0; i < num; i++)
{
fscanf_s(fp, "%s %s %f %f %f %f %f %f\n", students[i].ID, students[i].Name, &students[i].Mark1, &students[i].Mark2, &students[i].Mark3, &students[i].Mark4, &students[i].All, &students[i].Average);
}
fclose(fp);
}
/*主程序*/
int main() {
int i;
while (1) {
Load();
printf("\t\t\t\t\t-------- 学生成绩管理系统-------\n\n\n\n"); //菜单
printf("\t\t\t\t\t1. 增加学生记录\n\n");
printf("\t\t\t\t\t2. 修改学生记录\n\n");
printf("\t\t\t\t\t3. 删除学生记录\n\n");
printf("\t\t\t\t\t4. 插入学生记录\n\n");
printf("\t\t\t\t\t5. 显示所有记录\n\n");
printf("\t\t\t\t\t6. 查询学生记录\n\n");
printf("\t\t\t\t\t7. 按平均成绩排序\n\n");
printf("\t\t\t\t\t8. 输出各科目不及格学生\n\n");
printf("\t\t\t\t\t9. 输出各科目最高分\n\n");
printf("\t\t\t\t\t0. 退出\n\n\n");
printf("请选择(0-9):");
scanf_s("%d", &i);
switch (i) {
case 1:inputt(); break;
case 2:modify(); break;
case 3:deletee(); break;
case 4:insert(); break;
case 5:display(); break;
case 6:search(); break;
case 7:sort(); break;
case 8:SearchLow(); break;
case 9:SearchHigh(); break;
case 0:exit(0);
default:;
}
Save();
}
return 0;
}
将所有 scanf_s 修改成 scanf、 fscanf_s 修改成 fscanf
你的代码一看原来都是用的非安全标准库函数，后来vs提示安全错误，都改成_s的安全版本
调用参数过少
这样试试：
我没运行，但是我看了一下，应该是你的strcpy，scanf这些函数的问题，这也是用vs的常见问题。可以关闭安全检查
源码这么多问题，怎么可能没问题哦
这个是我在网上买的代码，这个是它dev的格式，是不带_s的，但是运行不了
#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<stdlib.h>
#include<string.h>
struct Student{ //每个学生对应一个结构体
char ID[20];//学号
char Name[10];//姓名
float Mark1;//语文成绩
float Mark2;//数学成绩
float Mark3;//英语成绩
float Mark4;//计算机成绩
float All; //总分
float Average;//平均成绩
}students[1000];
int num=0; //计数器
void Copy(struct Student *arr,int i,int j)
{
strcpy(arr[i].ID,arr[j].ID);
strcpy(arr[i].Name,arr[j].Name);
arr[i].Mark1 = arr[j].Mark1;
arr[i].Mark2 = arr[j].Mark2;
arr[i].Mark3 = arr[j].Mark3;
arr[i].Mark4 = arr[j].Mark4;
arr[i].All = arr[j].All;
arr[i].Average = arr[j].Average;
}
int Student_SearchByName(char name[])//通过姓名来检索学生
{
int i;
for (i=0;i<num;i++)
{
if (strcmp(students[i].Name,name)==0) //通过strcmp函数来对比学生姓名，找到返回在数组的位置
{
return i;
}
}
return -1; //未找到返回 -1
}
int Student_SearchByIndex(char id[])//通过学号来检索学生信息
{
int i;
for (i=0;i<num;i++)
{
if (strcmp(students[i].ID,id)==0) //通过strcmp函数来对比学生id，找到返回位置
{
return i;
}
}
return -1; //未找到返回 -1
}
void Student_DisplaySingle(int index)//输出表头
{
printf("%10s%10s%8s%8s%8s%10s\n","学号","姓名","语文","数学","英语","计算机","总成绩","平均成绩");
printf("-------------------------------------------------------------\n");
printf("%10s%10s%8.2f%8.2f%8.2f%8.2f%10.2f%10.2f\n",students[index].ID,students[index].Name,
students[index].Mark1,students[index].Mark2,students[index].Mark3,students[index].Mark4,students[index].All,students[index].Average);
}
void inputt()//利用循环录入学生信息
{
while(1)
{
printf("请输入学号:");
scanf("%s",&students[num].ID);
getchar();
printf("请输入姓名:");
scanf("%s",&students[num].Name);
getchar();
printf("请输入成绩:");
scanf("%f",&students[num].Mark1);
getchar();
printf("请输入成绩:");
scanf("%f",&students[num].Mark2);
getchar();
printf("请输入成绩:");
scanf("%f",&students[num].Mark3);
getchar();
printf("请输入成绩:");
scanf("%f",&students[num].Mark4); //依次输入各项数据
getchar();
students[num].All=students[num].Mark1+students[num].Mark2+students[num].Mark3+students[num].Mark4; //输完数据后自动计算总成绩与平均成绩
students[num].Average=(students[num].Mark1+students[num].Mark2+students[num].Mark3+students[num].Mark4)/4;
if(Student_SearchByIndex(students[num].ID) == -1)
{
num++; //移向下一个位置
}
else
{
printf("学号重复，输入数据无效 !!!\n");
}
printf("是否继续?(y/n)");
if (getchar()=='n')
{
break;
}
}
}
void modify()//修改成绩
{
while(1)
{
char id[20];
int index;
printf("请输入要修改的学生的学号:");
scanf("%s",&id);
getchar();
index=Student_SearchByIndex(id); //调用搜查id函数，根据其返回值确定位置
if (index==-1)
{
printf("学生不存在!\n");
}
else
{
printf("你要修改的学生信息为:\n");
Student_DisplaySingle(index);
printf("-- 请输入新值--\n");
printf("请输入学号:");
scanf("%s",&students[index].ID);
getchar();
printf("请输入姓名:");
scanf("%s",&students[index].Name);
getchar();
printf("请输入语文成绩:");
scanf("%f",&students[index].Mark1);
getchar();
printf("请输入数学成绩:");
scanf("%f",&students[index].Mark2);
getchar();
printf("请输入英语成绩:");
scanf("%f",&students[index].Mark3);
getchar();
printf("请输入计算机成绩:");
scanf("%f",&students[index].Mark4); //重新录入一套新的数据替代
getchar();
students[index].All=students[index].Mark1+students[index].Mark2+students[index].Mark3+students[index].Mark4;
students[index].Average=(students[index].Mark1+students[index].Mark2+students[index].Mark3+students[index].Mark4)/4;
}
printf("是否继续?(y/n)");
if (getchar()=='n')
{
break;
}
}
}
void deletee()//删除学生信息
{
int i;
while(1)
{
char id[20];
int index;
printf("请输入要删除的学生的学号:");
scanf("%s",&id);
getchar();
index=Student_SearchByIndex(id); //调用搜查id函数，根据其返回值确定位置
if (index==-1)
{
printf("学生不存在!\n");
}
else
{
printf("你要删除的学生信息为:\n");
Student_DisplaySingle(index);
printf("是否真的要删除?(y/n)");
if (getchar()=='y')
{
for (i=index;i<num-1;i++)
{
Copy(students,i,i+1);
//students[i]=students[i+1]; //把后边的对象都向前移动
}
num--;
}
getchar();
}
printf("是否继续?(y/n)");
if (getchar()=='n')
{
break;
}
}
}
void display()//打印已录入的学生信息
{
int a;
printf("%10s%10s%8s%8s%8s%8s%10s%10s\n","学号","姓名","语文","数学","英语","计算机","总成绩","平均成绩");
printf("-------------------------------------------------------------\n");
for (a=0;a<num;a++)
{
printf("%10s%10s%8.2f%8.2f%8.2f%8.2f%10.2f%10.2f\n",students[a].ID,students[a].Name,
students[a].Mark1,students[a].Mark2,students[a].Mark3,students[a].Mark4,students[a].All,students[a].Average);
}
}
void insert()//指定位置插入学生信息
{
int a,b,c;
printf("请输入你要插入的位置");
scanf("%d",&a);
if(a>num) {
printf("输入的位置有误，请重新输入,当前共%d条数据\n",num);
scanf("%d",&a);}
b=num-1;
for(;b>=a-1;b--)
{
//strcpy(students[b+1].ID,students[b].ID);
//strcpy(students[b+1].Name,students[b].Name);
//students[b+1].Mark1=students[b].Mark1;
//students[b+1].Mark2=students[b].Mark2;
//students[b+1].Mark3=students[b].Mark3;
//students[b+1].Mark4=students[b].Mark4;
//students[b+1].All=students[b].All;
//students[b+1].Average=students[b].Average;
Copy(students,b+1,b); //根据其输入的位置，将其及以后的数据向后移动一个位置
}
num++;
printf("请输入学号:");
scanf("%s",&students[a-1].ID);
getchar();
printf("请输入姓名:");
scanf("%s",&students[a-1].Name);
getchar();
printf("请输入语文成绩:");
scanf("%f",&students[a-1].Mark1);
getchar();
printf("请输入数学成绩:");
scanf("%f",&students[a-1].Mark2);
getchar();
printf("请输入英语成绩:");
scanf("%f",&students[a-1].Mark3);
getchar();
printf("请输入计算机成绩:");
scanf("%f",&students[a-1].Mark4); //输入新数据
getchar();
students[a-1].All=students[a-1].Mark1+students[a-1].Mark2+students[a-1].Mark3+students[a-1].Mark4;
students[a-1].Average=(students[a-1].Mark1+students[a-1].Mark2+students[a-1].Mark3+students[a-1].Mark4)/4;
}
void search()//查询学生信息
{
while(1)
{
char name[20];
int index;
printf("请输入要查询的学生的姓名:");
scanf("%s",&name);
getchar();
index=Student_SearchByName(name); //调用搜查name函数，根据其返回值确定位置
if (index==-1)
{
printf("学生不存在!\n");
}
else
{
printf("你要查询的学生信息为:\n");
Student_DisplaySingle(index);
}
printf("是否继续?(y/n)");
if (getchar()=='n')
{
break;
}
}
}
void sort()//根据平均分排序
{
int i,j;
//struct students tmp;
for (i=0;i<num;i++)
{
students[i].Average=(students[i].Mark1+students[i].Mark2+students[i].Mark3+students[i].Mark4)/4;
}
for (i=0;i<num;i++)
{
for (j=1;j<num-i;j++)
{
if (students[j-1].Average<students[j].Average)
{
Copy(students,num,j-1);
Copy(students,j-1,j);
Copy(students,j,num);
//tmp=students[j-1];
//students[j-1]=students[j];
//students[j]=tmp; //冒泡排序
}
}
}
int a;
printf("%10s%10s%8s%8s%8s%10s\n","学号","姓名","语文","数学","英语","计算机","总成绩","平均成绩");
printf("-------------------------------------------------------------\n");
for (a=0;a<num;a++)
{
printf("%10s%10s%8.2f%8.2f%8.2f%8.2f%10.2f%10.2f\n",students[a].ID,students[a].Name,
students[a].Mark1,students[a].Mark2,students[a].Mark3,students[a].Mark4,students[a].All,students[a].Average);
}
}
void SearchLow()//搜索不及格的并输出
{
int a;
printf(" 语文不及格的有%10s%10s%8s\n","学号","姓名","语文");
for(a=0;a<num;a++)
{
if(students[a].Mark1<60)
printf("%10s%10s%8.2f\n",students[a].Name,students[a].ID,students[a].Mark1); //从头搜索到尾，若小于60就输出
}
printf(" 数学不及格的有%10s%10s%8s\n","学号","姓名","数学");
for(a=0;a<num;a++)
{
if(students[a].Mark2<60)
printf("%10s%10s%8.2f\n",students[a].Name,students[a].ID,students[a].Mark2);
}
printf(" 英语不及格的有%10s%10s%8s\n","学号","姓名","英语");
for(a=0;a<num;a++)
{
if(students[a].Mark3<60)
printf("%10s%10s%8.2f\n",students[a].Name,students[a].ID,students[a].Mark3);
}
printf(" 计算机不及格的有%10s%10s%8s\n","学号","姓名","计算机");
for(a=0;a<num;a++)
{
if(students[a].Mark4<60)
printf("%10s%10s%8.2f\n",students[a].Name,students[a].ID,students[a].Mark4);
}
system("pause");
}
void SearchHigh()//搜索成绩最高者输出
{
int a;
int max ;
printf(" 语文最高分为%10s%10s%8s\n","学号","姓名","语文");
max=students[0].Mark1;
for(a=1;a<num;a++)
{
if(students[a].Mark1>max)
max=students[a].Mark1;
}
for(a=0;a<num;a++)
{
if(max==students[a].Mark1)
printf("%10s%10s%8.2f\n",students[a].Name,students[a].ID,students[a].Mark1);
}
printf(" 数学最高分为%10s%10s%8s\n","学号","姓名","数学");
max=students[0].Mark2;
for(a=1;a<num;a++)
{
if(students[a].Mark2>max)
max=students[a].Mark2;
}
for(a=0;a<num;a++)
{
if(max==students[a].Mark2)
printf("%10s%10s%8.2f\n",students[a].Name,students[a].ID,students[a].Mark2);
}
printf(" 英语最高分为%10s%10s%8s\n","学号","姓名","英语");
max=students[0].Mark3;
for(a=1;a<num;a++)
{
if(students[a].Mark3>max)
max=students[a].Mark3;
}
for(a=0;a<num;a++)
{
if(max==students[a].Mark3)
printf(" %10s%10s%8.2f\n",students[a].Name,students[a].ID,students[a].Mark3);
}
printf(" 计算机最高分为%10s%10s%8s\n","学号","姓名","计算机");
max=students[0].Mark4;
for(a=1;a<num;a++)
{
if(students[a].Mark4>max)
max=students[a].Mark4;
}
for(a=0;a<num;a++)
{
if(max==students[a].Mark4)
printf(" %10s%10s%8.2f\n",students[a].Name,students[a].ID,students[a].Mark4);
}
system("pause");
}
void Save()
{
FILE*fp = fopen("temp.txt","w+");
fprintf(fp,"%d\n",num);
for(int i = 0 ; i< num ;i++)
{
fprintf(fp,"%s %s %f %f %f %f %f %f\n",students[i].ID,students[i].Name,students[i].Mark1,students[i].Mark2,students[i].Mark3,students[i].Mark4,students[i].All,students[i].Average);
}
fclose(fp);
}
void Load()
{
FILE*fp = fopen("temp.txt","r");
fscanf(fp,"%d",&num);
for(int i = 0 ; i< num ;i++)
{
fscanf(fp,"%s %s %f %f %f %f %f %f\n",students[i].ID,students[i].Name,&students[i].Mark1,&students[i].Mark2,&students[i].Mark3,&students[i].Mark4,&students[i].All,&students[i].Average);
}
fclose(fp);
}
/*主程序*/
int main(){
int i;
while(1){
Load();
printf("\t\t\t\t\t-------- 学生成绩管理系统-------\n\n\n\n"); //菜单
printf("\t\t\t\t\t1. 增加学生记录\n\n");
printf("\t\t\t\t\t2. 修改学生记录\n\n");
printf("\t\t\t\t\t3. 删除学生记录\n\n");
printf("\t\t\t\t\t4. 插入学生记录\n\n");
printf("\t\t\t\t\t5. 显示所有记录\n\n");
printf("\t\t\t\t\t6. 查询学生记录\n\n");
printf("\t\t\t\t\t7. 按平均成绩排序\n\n");
printf("\t\t\t\t\t8. 输出各科目不及格学生\n\n");
printf("\t\t\t\t\t9. 输出各科目最高分\n\n");
printf("\t\t\t\t\t0. 退出\n\n\n");
printf("请选择(0-9):");
scanf("%d",&i);
switch(i){
case 1:inputt();break;
case 2:modify();break;
case 3:deletee();break;
case 4:insert();break;
case 5:display();break;
case 6:search();break;
case 7:sort();break;
case 8:SearchLow();break;
case 9:SearchHigh();break;
case 0:exit(0);
default: ;
}
Save();
}
return 0;
}
编译错误还是运行错误啊？问题说的也不清楚，可能跟工程设置有关，必要时可以远程协助。