c语言学生成绩管理系统
谁会这个啊😱帮忙发一下，明天上午就要上交，谢谢各位了，事情紧急，事情紧急
#include<stdio.h>
#include<stdlib.h>
#include<conio.h>
#include<dos.h>
#include<string.h>
#define LEN sizeof(struct student)
#define FORMAT "%-8d%-15s%-12.1lf%-12.1lf%-12.1lf%-12.1lf%-12.1f\n"
#define DATA stu[i].num,stu[i].name,stu[i].cyy,stu[i].dlfx,stu[i].gs,stu[i].yy,stu[i].jd
struct student
{
int num;
char name[15];
double cyy;
double dlfx;
double gs;
double yy;
double jd;
};
struct student stu[51];
void denglujiemian();
void menu1();
void menu2();
void in();
void search();
void del();
void modify();
void insert();
void order();
void total();
void show();
void flunk();
void denglujiemian();
int main()
{
system("color e3\n");
int n;
char w;
printf("***欢***迎***进***入***学***生***成***绩***管***理***系***统***");
printf("请选择进入模式：\n如果选择老师模式请输入“A”，选择学生模式请按“B”。");
scanf("%c",&w);
if(w=='A')
{
menu2();
scanf("%d",&n);
while(n)
{
switch(n)
{
case 1: in();break;
case 2: search();break;
case 3: del();break;
case 4: modify();break;
case 5: insert();break;
case 6: order();break;
case 7: total();break;
case 8: flunk();break;
case 9: show();break;
default:break;
}
printf("输入任意键将返回主菜单\n");
getch();
menu2();
scanf("%d",&n);
}
}
else if(w=='B')
{
menu1();
scanf("%d",&n);
while(n)
{
switch(n)
{
case 1: search();break;
case 2: order();break;
case 3: total();break;
case 4: flunk();break;
case 5: show();break;
default:break;
}
printf("输入任意键将返回主菜单\n");
getch();
menu1();
scanf("%d",&n);
}
}
else
{
printf("错误！！！请重新输入");
}
}
void in()
{
int i,m=0;
char ch[2];
FILE *fp;
if((fp=fopen("data1.txt","a+"))==NULL)
{
printf("文件不存在！\n");
return;
}
while(!feof(fp))
{
if(fread(&stu[m] ,LEN,1,fp)==1)
{
m++;
}
}
fclose(fp);
if(m==0)
{
printf("文件中没有记录!\n");
}
else
{
show();
}
if((fp=fopen("data1.txt","ab+"))==NULL)
{
printf("文件不存在！\n");
return;
}
printf("输入学生信息(y/n):");
scanf("%s",ch);
while(strcmp(ch,"Y")==0||strcmp(ch,"y")==0)
{
printf("学号:");
scanf("%d",&stu[m].num);
for(i=0;i<m;i++)
if(stu[i].num==stu[m].num)
{
printf("该序号已经存在了，按任意键继续!");
getch();
fclose(fp);
return;
}
printf("姓名:");
scanf("%s",stu[m].name);
printf("C语言:");
scanf("%lf",&stu[m].cyy);
printf("电路分析:");
scanf("%lf",&stu[m].dlfx);
printf("高等数学:");
scanf("%lf",&stu[m].gs);
printf("大学英语:");
scanf("%lf",&stu[m].yy);
stu[m].jd=stu[m].cyy/10-5+stu[m].dlfx/10-5+stu[m].gs/10-5+stu[m].yy/10-5;
if(fwrite(&stu[m],LEN,1,fp)!=1)
{
printf("不能保存!");
getch();
}
else
{
printf("%s 被保存!\n",stu[m].name);
m++;
}
printf("继续?(y/n):");
scanf("%s",ch);
}
fclose(fp);
printf("OK!\n");
}
void show()
{
FILE *fp;
int i,m=0;
fp=fopen("data1.txt","rb");
while(!feof(fp))
{
if(fread(&stu[m] ,LEN,1,fp)==1)
m++;
}
fclose(fp);
printf("学号 姓名 C语言 电路分析 高等数学 大学英语 总绩点\t\n");
for(i=0;i<m;i++)
{
printf(FORMAT,DATA);
}
}
void menu2()
{
system("cls");
printf("\n\n\n\n");
printf("\t\t|---------------学生成绩管理系统---------------|\n");
printf("\t\t|\t\t\t\t\t |\n");
printf("\t\t|\t\t 1. 录入学生成绩\t |\n");
printf("\t\t|\t\t 2. 查找学生信息\t |\n");
printf("\t\t|\t\t 3. 删除学生信息\t |\n");
printf("\t\t|\t\t 4. 修改学生信息\t |\n");
printf("\t\t|\t\t 5. 插入学生信息\t |\n");
printf("\t\t|\t\t 6. 按总绩点排序\t |\n");
printf("\t\t|\t\t 7. 统计学生总数\t |\n");
printf("\t\t|\t\t 8. 显示挂科学生信息\t |\n");
printf("\t\t|\t\t 9. 显示所有学生信息\t |\n");
printf("\t\t|\t\t 0. 退出系统\t\t |\n");
printf("\t\t|\t\t\t\t\t |\n");
printf("\t\t|----------------------------------------------|\n\n");
printf("\t\t\t\t\t\t\t制作团队：第二组\n");
printf("\t\t\t请选择(0-9):");
}
void menu1()
{
system("cls");
printf("\n\n\n\n");
printf("\t\t|---------------学生成绩管理系统---------------|\n");
printf("\t\t|\t\t\t\t\t |\n");
printf("\t\t|\t\t 1. 查找学生信息\t |\n");
printf("\t\t|\t\t 2. 按总绩点排序\t |\n");
printf("\t\t|\t\t 3. 统计学生总数\t |\n");
printf("\t\t|\t\t 4. 显示挂科学生信息\t |\n");
printf("\t\t|\t\t 5. 显示所有学生信息\t |\n");
printf("\t\t|\t\t 0. 退出系统\t\t |\n");
printf("\t\t|\t\t\t\t\t |\n");
printf("\t\t|----------------------------------------------|\n\n");
printf("\t\t\t\t\t\t\t制作团队：第二组\n");
printf("\t\t\t请选择(0-5):");
}
void order()
{
FILE *fp;
struct student t;
int i=0,j=0,m=0;
if((fp=fopen("data1.txt","r+"))==NULL)
{
printf("文件不存在！\n");
return;
}
while(!feof(fp))
if(fread(&stu[m] ,LEN,1,fp)==1)
m++;
fclose(fp);
if(m==0)
{
printf("文件中没有记录!\n");
return;
}
if((fp=fopen("data1.txt","wb"))==NULL)
{
printf("文件不存在！\n");
return;
}
for(i=0;i<m-1;i++)
for(j=i+1;j<m;j++)
if(stu[i].jd<stu[j].jd)
{
t=stu[i];stu[i]=stu[j];stu[j]=t;
}
if((fp=fopen("data1.txt","wb"))==NULL)
{
printf("文件不存在！\n");
return;
}
for(i=0;i<m;i++)
if(fwrite(&stu[i] ,LEN,1,fp)!=1)
{
printf("%s 不能保存文件!\n");
getch();
}
fclose(fp);
printf("保存成功\n请返回选项9查看排名\n");
}
void del()
{
FILE *fp;
int snum,i,j,m=0,n=0;
char ch[2];
if((fp=fopen("data1.txt","r+"))==NULL)
{
printf("文件不存在！\n");
return;
}
while(!feof(fp)) if(fread(&stu[m],LEN,1,fp)==1) m++;
fclose(fp);
if(m==0)
{
printf("文件中没有记录！\n");
return;
}
printf("请输入学生学号");
scanf("%d",&snum);
for(i=0;i<m;i++)
if(snum==stu[i].num)
{
printf("找到了这条记录，是否删除?(y/n)");
scanf("%s",ch);
if(strcmp(ch,"Y")==0||strcmp(ch,"y")==0)
{
for(j=i;j<m;j++)
stu[j]=stu[j+1];
m--;
if((fp=fopen("data1.txt","wb"))==NULL)
{
printf("文件不存在\n");
return;
}
for(j=0;j<m;j++)
if(fwrite(&stu[j] ,LEN,1,fp)!=1)
{
printf("can not save!\n");
getch();
}
fclose(fp);
printf("删除成功!\n");
}
else
{
printf("找到了记录，选择不删除！");
}
break;
}
else
{
n++;
}
if(n==m)
printf("没有找到记录!\n");
}
void search()
{
FILE *fp;
int snum,i,m=0;
if((fp=fopen("data1.txt","rb"))==NULL)
{
printf("文件不存在！\n");
return;
}
while(!feof(fp))
if(fread(&stu[m],LEN,1,fp)==1)
m++;
fclose(fp);
if(m==0)
{
printf("文件中没有记录！\n");
return;
}
printf("请输入学号:");
scanf("%d",&snum);
for(i=0;i<m;i++)
if(snum==stu[i].num)
{
printf("学号 姓名 C语言 电路分析 高等数学 大学英语 总绩点\t\n");
printf(FORMAT,DATA);
break;
}
if(i==m) printf("没有找到这名学生!\n");
}
void modify()
{
FILE *fp;
struct student t;
int i=0,j=0,m=0,snum;
if((fp=fopen("data1.txt","r+"))==NULL)
{
printf("文件不存在！\n");
return;
}
while(!feof(fp))
if(fread(&stu[m] ,LEN,1,fp)==1)
m++;
if(m==0)
{
printf("文件中没有记录！\n");
fclose(fp);
return;
}
show();
printf("请输入要修改的学生学号： ");
scanf("%d",&snum);
for(i=0;i<m;i++)
if(snum==stu[i].num)
{
printf("找到了这名学生,可以修改他的信息!\n");
printf("姓名:");
scanf("%s",stu[i].name);
printf("C语言:");
scanf("%lf",&stu[i].cyy);
printf("电路分析:");
scanf("%lf",&stu[i].dlfx);
printf("高等数学:");
scanf("%lf",&stu[i].gs);
printf("大学英语:");
scanf("%lf",&stu[i].yy);
printf("修改成功!");
stu[i].jd=(stu[i].cyy+stu[i].dlfx+stu[i].gs+stu[i].yy)/10-20;
if((fp=fopen("data1.txt","wb"))==NULL)
{
printf("can not open\n");
return;
}
for(j=0;j<m;j++)
if(fwrite(&stu[j] ,LEN,1,fp)!=1)
{
printf("can not save!");
getch();
}
fclose(fp);
break;
}
if(i==m)
printf("没有找到这名学生!\n");
}
void insert()
{
FILE *fp;
int i,j,k,m=0,snum;
if((fp=fopen("data1.txt","r+"))==NULL)
{
printf("文件不存在！\n");
return;
}
while(!feof(fp))
if(fread(&stu[m],LEN,1,fp)==1)
m++;
if(m==0)
{
printf("文件中没有记录!\n");
fclose(fp);
return;
}
printf("请输入要插入的位置(学号)：\n");
scanf("%d",&snum);
for(i=0;i<m;i++)
if(snum==stu[i].num)
break;
for(j=m-1;j>i;j--)
stu[j+1]=stu[j];
printf("现在请输入要插入的学生信息.\n");
printf("序号:");
scanf("%d",&stu[i+1].num);
for(k=0;k<m;k++)
if(stu[k].num==stu[m].num)
{
printf("该学号已经存在，按任意键继续!");
getch();
fclose(fp);
return;
}
printf("姓名:");
scanf("%s",stu[i+1].name);
printf("C语言:");
scanf("%lf",&stu[i+1].cyy);
printf("电路分析:");
scanf("%lf",&stu[i+1].dlfx);
printf("高等数学:");
scanf("%lf",&stu[i+1].gs);
printf("大学英语:");
scanf("%lf",&stu[i+1].yy);
stu[i+1].jd=(stu[i+1].cyy+stu[i+1].dlfx+stu[i+1].gs+stu[i+1].yy)/10-20;
printf("插入成功！按任意键返回主界面！");
if((fp=fopen("data1.txt","wb"))==NULL)
{
printf("不能打开！\n");
return;
}
for(k=0;k<=m;k++)
if(fwrite(&stu[k] ,LEN,1,fp)!=1)
{
printf("不能保存!");
getch();
}
fclose(fp);
}
void total()
{
FILE *fp;
int m=0;
if((fp=fopen("data1.txt","r+"))==NULL)
{
printf("文件不存在！\n");
return;
}
while(!feof(fp))
if(fread(&stu[m],LEN,1,fp)==1)
m++;
if(m==0) {printf("no record!\n");fclose(fp);return;}
printf("这个班级一共有 %d 名学生!\n",m);
fclose(fp);
}
void flunk()
{
FILE *fp;
int i,m=0;
fp=fopen("data1.txt","rb");
while(!feof(fp))
{
if(fread(&stu[m] ,LEN,1,fp)==1)
m++;
}
fclose(fp);
printf("学号 姓名 C语言 电路分析 高等数学 大学英语 总绩点\t\n");
for(i=0;i<m;i++)
{
if(stu[i].dlfx<60||stu[i].cyy<60||stu[i].gs<60||stu[i].yy<60)
printf(FORMAT,DATA);
}
}
代码：
#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define N 100
void zhuye()
{
printf(" ############欢迎进入学生成绩管理系统############\n");
printf(" 1.录入学生成绩 5.按成绩排序\n");
printf(" 2.修改学生成绩 6.清屏\n");
printf(" 3.删除学生信息 7.显示所有成绩\n");
printf(" 4.查询学生成绩 0.退出\n");
printf(" ################################################\n");
printf("请输入您的选择:");
}
typedef struct _cj
{
int xh; //学号
char xm[20]; //姓名
int yy; //英语
int gs; //高数
int cyy; //C语言
int wl; //物理
int sz; //思政
int sum; //总分
float ave; //平均分
}cj;
cj s[N];
int g_zs = 0; //存储实际数量
//显示所有数据
void Display()
{
int i;
const char* pid = "学号";
const char* pname = "姓名";
const char* pS1 = "英语";
const char* pS2 = "高数";
const char* pS3 = "C语言";
const char* pS4 = "物理";
const char* pS5 = "思政";
const char* pS6 = "总分";
const char* pS7 = "平均分";
system("cls");
if (g_zs == 0)
{
printf("当前没有数据!!\n");
system("pause");
return;
}
printf("%s %8s %8s %8s %8s %8s %8s %8s %8s\n", pid, pname, pS1, pS2, pS3, pS4, pS5, pS6, pS7);
for (i = 0; i < g_zs; i++)
printf("%d %8s %8d %8d %8d %8d %8d %8d %6.2f\n", s[i].xh, s[i].xm, s[i].yy, s[i].gs, s[i].cyy, s[i].wl, s[i].sz, s[i].sum, s[i].ave);
system("pause");
}
//从文件中读取
void ReadFile()
{
int i = 0;
char buf[200] = { 0 };
FILE* p;
system("cls");
p = fopen("学生成绩信息.txt", "r");
if (p == 0)
return;
fgets(buf, 200, p); //读取第一行的注释行
while (!feof(p))
{
fscanf(p, "%d %8s %8d %8d %8d %8d %8d %8d %6f\n", &s[i].xh, s[i].xm, &s[i].yy, &s[i].gs, &s[i].cyy, &s[i].wl, &s[i].sz, &s[i].sum, &s[i].ave);
if (s[i].xh > 0)
i++;
}
fclose(p);
g_zs = i;
}
//写文件
void Write2file(const char* filename)
{
int i = 0;
FILE* p;
const char* pid = "学号";
const char* pname = "姓名";
const char* pS1 = "英语";
const char* pS2 = "高数";
const char* pS3 = "C语言";
const char* pS4 = "物理";
const char* pS5 = "思政";
const char* pS6 = "总分";
const char* pS7 = "平均分";
p = fopen(filename, "w"); //"学生成绩信息.txt"
if (p == NULL) return;
fprintf(p, "%s %8s %8s %8s %8s %8s %8s %8s %6s\n", pid, pname, pS1, pS2, pS3, pS4, pS5, pS6, pS7);
for (i = 0; i < g_zs; i++)
fprintf(p, "%d %8s %8d %8d %8d %8d %8d %8d %6.2f\n", s[i].xh, s[i].xm, s[i].yy, s[i].gs, s[i].cyy, s[i].wl, s[i].sz, s[i].sum, s[i].ave);
fclose(p);
}
//新增
void input()
{
int xh, i;
system("cls");
printf("请输入新学生学号:");
while (1)
{
scanf("%d", &xh);
//判断学号是否已经存在
for (i = 0; i < g_zs; i++)
{
if (s[i].xh == xh)
{
printf("学号已存在，请重新输入:");
break;
}
}
if (i == g_zs) //说明没有重复的学号
break;
}
s[g_zs].xh = xh;
printf("请输入新学生姓名:");
scanf("%s", s[g_zs].xm);
printf("请输入英语成绩:");
scanf("%d", &s[g_zs].yy);
printf("请输入高数成绩:");
scanf("%d", &s[g_zs].gs);
printf("请输入C语言成绩:");
scanf("%d", &s[g_zs].cyy);
printf("请输入物理成绩:");
scanf("%d", &s[g_zs].wl);
printf("请输入思政成绩:");
scanf("%d", &s[g_zs].sz);
s[g_zs].sum = s[g_zs].yy + s[g_zs].gs + s[g_zs].cyy + s[g_zs].wl + s[g_zs].sz;
s[g_zs].ave = s[i].sum / 5.0;
g_zs = g_zs + 1;
printf("录入成功!!\n");
Write2file("学生成绩信息.txt"); //保存到文件
system("pause");
}
//修改
void xiugai()
{
int n, i;
const char* pid = "学号";
const char* pname = "姓名";
const char* pS1 = "英语";
const char* pS2 = "高数";
const char* pS3 = "C语言";
const char* pS4 = "物理";
const char* pS5 = "思政";
const char* pS6 = "总分";
const char* pS7 = "平均分";
system("cls");
printf("请输入要修改信息的学生的学号：\n");
scanf("%d", &n);
for (i = 0; i < g_zs; i++)
{
if (s[i].xh == n)
{
printf("该学生当前信息如下：");
printf("%s %8s %8s %8s %8s %8s %8s %8s %6s\n", pid, pname, pS1, pS2, pS3, pS4, pS5, pS6, pS7);
printf("%d %8s %8d %8d %8d %8d %8d %8d %6.2f\n", s[i].xh, s[i].xm, s[i].yy, s[i].gs, s[i].cyy, s[i].wl, s[i].sz, s[i].sum, s[i].ave);
printf("请输入修改信息:\n");
printf("请修改学生姓名:");
scanf("%s", s[i].xm);
printf("请修改英语成绩:");
scanf("%d", &s[i].yy);
printf("请修改高数成绩:");
scanf("%d", &s[i].gs);
printf("请修改C语言成绩:");
scanf("%d", &s[i].cyy);
printf("请修改物理成绩:");
scanf("%d", &s[i].wl);
printf("请修改思政成绩:");
scanf("%d", &s[i].sz);
s[i].sum = s[i].yy + s[i].gs + s[i].cyy + s[i].wl + s[i].sz;
s[i].ave = s[i].sum / 5.0;
printf("修改成功!!\n");
Write2file("学生成绩信息.txt"); //保存到文件
break;
}
}
if (i == g_zs)
printf("未找到该学生成绩信息!!\n");
system("pause");
}
//查询
void chaxun()
{
int t, i, xuehao;
char xingming[20] = { 0 };
const char* pid = "学号";
const char* pname = "姓名";
const char* pS1 = "英语";
const char* pS2 = "高数";
const char* pS3 = "C语言";
const char* pS4 = "物理";
const char* pS5 = "思政";
const char* pS6 = "总分";
const char* pS7 = "平均分";
system("cls");
printf(" ###########请选择查询方式################\n");
printf(" 1.通过学生姓名 2.通过学生学号\n");
printf(" 3.清屏 4.退出\n");
printf(" ####################################################\n");
printf("请输入您的选择:");
scanf("%d", &t);
switch (t)
{
case 1:
printf("请输入要查询学生的姓名:\n");
scanf("%s", xingming);
for (i = 0; i < g_zs; i++)
{
if (strcmp(s[i].xm, xingming) == 0)
{
printf("\n查寻到的学生为:\n");
printf("%s %8s %8s %8s %8s %8s %8s %8s %6s\n", pid, pname, pS1, pS2, pS3, pS4, pS5, pS6, pS7);
printf("%d %8s %8d %8d %8d %8d %8d %8d %6.2f\n", s[i].xh, s[i].xm, s[i].yy, s[i].gs, s[i].cyy, s[i].wl, s[i].sz, s[i].sum, s[i].ave);
break;
}
}
if (i == g_zs)
printf("\n未查到成绩信息!!!\n");
break;
case 2:
printf("请输入要查询学生的学号:");
scanf("%d", &xuehao);
for (i = 0; i < g_zs; i++)
{
if (s[i].xh == xuehao)
{
printf("\n查寻到的学生为:\n");
printf("%s %8s %8s %8s %8s %8s %8s %8s %6s\n", pid, pname, pS1, pS2, pS3, pS4, pS5, pS6, pS7);
printf("%d %8s %8d %8d %8d %8d %8d %8d %6.2f\n", s[i].xh, s[i].xm, s[i].yy, s[i].gs, s[i].cyy, s[i].wl, s[i].sz, s[i].sum, s[i].ave);
break;
}
}
if (i == g_zs)
printf("\n未查到成绩信息!!!\n");
break;
case 3:
system("cls");
break;
case 4:
break;
}
system("pause");
}
//删除
void shanchu()
{
int i, j;
int id;
system("cls");
printf("请输入要删除的学生学号：");
scanf("%d", &id);
for (i = 0; i < g_zs; i++)
{
if (s[i].xh == id)
{
//将后面的数据前移一位
for (j = i; j < g_zs - 1; j++)
s[j] = s[j + 1];
g_zs = g_zs - 1;
printf("该学生的信息已经删除!!!\n");
Write2file("学生成绩信息.txt"); //写入文件
break;
}
}
if (i == g_zs)
printf("没找到该学生的信息!!!");
system("pause");
}
//排序
void paixu()
{
int i, j;
cj st;
system("cls");
printf("按照总成绩排序...");
for (i = 0; i < g_zs - 1; i++)
{
for (j = 0; j < g_zs - i - 1; j++)
{
if (s[j].sum > s[j + 1].sum)
{
st = s[j];
s[j] = s[j + 1];
s[j + 1] = st;
}
}
}
Write2file("students.txt"); //写入文件
printf("排序完成\n");
system("pause");
}
//退出
void tuichu()
{
system("cls");
printf("\n\n\t\t谢谢使用\n\n\n");
}
void main()
{
int x;
int bgo = 1; //程序运行标志
ReadFile(); //读取文件数据
while (bgo)
{
system("cls");
zhuye();
scanf("%d", &x);
switch (x)
{
case 0:
bgo = 0;
break;
case 1:
input();
break;
case 2:
xiugai();
break;;
case 3:
shanchu();
break;
case 4:
chaxun();
break;
case 5:
paixu();
break;
case 6:
system("cls");
break;;
case 7:
Display();
break;;
}
}
}
C语言学生成绩管理系统
借鉴或者直接用都可以
https://blog.csdn.net/qq_63294590/article/details/122016767
班级成绩管理系统-增删查改文件读取保存等功能【C语言】
#include<stdio.h>
#include<windows.h>
#define Max 25
#define obj_num 5
struct Stu
{
char Name[25]; //姓名
int Number; //学号
int Language_score;//语文成绩
int Math_score; //数学成绩
int English_score; //英语成绩
int PE_score; //体育成绩
int C_score; //C语言成绩
int Sum_score; //总成绩
};
void input(struct Stu Class[],int j)
{
printf("输入第%d位同学姓名:",j+1);
scanf("%s",Class[j].Name);
getchar();
printf("输入第%d位同学学号:",j+1);
scanf("%d",&Class[j].Number);
printf("输入第%d位同学语文成绩:",j+1);
scanf("%d",&Class[j].Language_score);
printf("输入第%d位同学数学成绩:",j+1);
scanf("%d",&Class[j].Math_score);
printf("输入第%d位同学英语成绩:",j+1);
scanf("%d",&Class[j].English_score);
printf("输入第%d位同学体育成绩:",j+1);
scanf("%d",&Class[j].PE_score);
printf("输入第%d位同学C语言成绩:",j+1);
scanf("%d",&Class[j].C_score);
Class[j].Sum_score=Class[j].Language_score+Class[j].Math_score+Class[j].English_score+Class[j].PE_score+Class[j].C_score;
}
void output(struct Stu Class[],int n)
{
printf("---------------------------------------------\n");
printf("姓名 学号 语文 数学 英语 体育 C语言 总分");
printf("\n");
int j;
for(j=0; j<n; j++)
{
printf("%5s",Class[j].Name);
printf("%5d",Class[j].Number);
printf("%6d",Class[j].Language_score);
printf("%6d",Class[j].Math_score);
printf("%6d",Class[j].English_score);
printf("%6d",Class[j].PE_score);
printf("%6d",Class[j].C_score);
printf("%7d",Class[j].Sum_score);
printf("\n");
}
printf("---------------------------------------------\n");
}
void outputOne(struct Stu Class[],int j)
{
printf("姓名 学号 语文 数学 英语 体育 C语言 总分");
printf("\n");
printf("%5s",Class[j].Name);
printf("%5d",Class[j].Number);
printf("%6d",Class[j].Language_score);
printf("%6d",Class[j].Math_score);
printf("%6d",Class[j].English_score);
printf("%6d",Class[j].PE_score);
printf("%6d",Class[j].C_score);
printf("%7d",Class[j].Sum_score);
printf("\n");
}
void Sort(struct Stu Class[],int n)
{
int j,k;
struct Stu t;
for(j=0; j<n-1; j++)
{
for(k=0; k<n-j-1; k++)
{
if(Class[k].Sum_score<Class[k+1].Sum_score)
{
t=Class[k];
Class[k]=Class[k+1];
Class[k+1]=t;
}
}
}
}
int search(int number,int n,struct Stu Class[])
{
int i,p=0;
for(i=0; i<n; i++)
{
if(Class[i].Number==number)
{
p=i;
return p;
}
}
return -1;
}
void modify(int number,int n,struct Stu Class[])
{
int index=search(number,n,Class);
if(index==-1)
{
printf("找不到该学号\n");
}
else
{
printf("学号%d的学生是第%d位\n",number,index+1);
input(Class,index);
printf("修改成功\n");
output(Class,n);
}
}
void del(int number,int n,struct Stu Class[])
{
int index=search(number,n,Class);
if(index==-1)
{
printf("找不到该学号\n");
}
else
{
printf("学号%d的学生是第%d位\n",number,index);
int i;
for(i=index; i<n-1; i++)
{
Class[i]= Class[i+1];
}
printf("删除成功\n");
output(Class,n-1);
}
}
double calave(int n,struct Stu Class[],double ave[])
{
int Language_score_sum=0;
int Math_score_sum=0;
int English_score_sum=0;
int PE_score_sum=0;
int C_score_sum=0;
for(int i=0; i<n; i++)
{
Language_score_sum+=Class[i].Language_score;
Math_score_sum+=Class[i].Math_score;
English_score_sum+=Class[i].English_score;
PE_score_sum+=Class[i].PE_score;
C_score_sum+=Class[i].C_score;
}
ave[0]=(double)Language_score_sum/n;
ave[1]=(double)Math_score_sum/n;
ave[2]=(double)English_score_sum/n;
ave[3]=(double)PE_score_sum/n;
ave[4]=(double)C_score_sum/n;
}
void save(int n,struct Stu Class[])
{
FILE *fp;
fp = fopen("score_data.txt","w");
if(fp == NULL)
{
printf("error!");
return;
}
else
{
for(int j=0; j<n; j++)
{
fprintf(fp,"%s %d %d %d %d %d %d %d\n",Class[j].Name,Class[j].Number,Class[j].Language_score,Class[j].Math_score,Class[j].English_score,Class[j].PE_score,Class[j].C_score,Class[j].Sum_score);
}
printf("文件写入成功\n");
}
fclose(fp);
}
int read(int n,struct Stu Class[])
{
FILE *fp;
fp = fopen("score_data.txt","r");
int count=0;
if(fp == NULL)
{
printf("error!");
return 0;
}
else
{
for(int j=0; j<n; j++)
{
int flag=fscanf(fp,"%s %d %d %d %d %d %d %d\n",Class[j].Name,&Class[j].Number,&Class[j].Language_score,&Class[j].Math_score,&Class[j].English_score,&Class[j].PE_score,&Class[j].C_score,&Class[j].Sum_score);
if(flag!=-1) count++;
}
printf("文件读取成功\n");
}
fclose(fp);
return count;
}
void menu(struct Stu Class[])
{
int n=0,count;
int option=1;
while(option<=9&&option>=1)
{
printf("------------------------\n");
printf("------学生成绩管理------\n");
printf("------1.输入成绩 ------\n");
printf("------2.输出成绩 ------\n");
printf("------3.按总成绩排序----\n");
printf("------4.按学号查询成绩--\n");
printf("------5.修改信息 ------\n");
printf("------6.删除学生 ------\n");
printf("------7.计算各科平均分--\n");
printf("------8.文件读入 ------\n");
printf("------9.保存至文件------\n");
printf("------other.退出 ------\n");
printf("------------------------\n");
printf("输入选项：");
scanf("%d",&option);
switch(option)
{
case 1:
{
system("cls");
printf("输入学生的个数(不大于%d):",Max-n);
scanf("%d",&count);
while(count--)
{
input(Class,n++);
}
output(Class,n);
break;
}
case 2:
{
system("cls");
output(Class,n);
break;
}
case 3:
{
system("cls");
Sort(Class,n);
output(Class,n);
break;
}
case 4:
{
system("cls");
int number;
printf("输入要查找的学号：");
scanf("%d",&number);
int index=search(number,n,Class);
if(index==-1)
{
printf("查找失败\n");
}
else
{
printf("查找成功\n");
outputOne(Class,index);
}
break;
}
case 5:
{
system("cls");
output(Class,n);
int number;
printf("输入要修改成绩的学生对应的学号：");
scanf("%d",&number);
modify(number,n,Class);
output(Class,n);
break;
}
case 6:
{
system("cls");
output(Class,n);
int number;
printf("输入要删除的学号：");
scanf("%d",&number);
del(number,n,Class);
n--;
system("cls");
output(Class,n);
break;
}
case 7:
{
system("cls");
output(Class,n);
double ave[obj_num];
calave(n,Class,ave);
char str[]="平均分";
printf("\n");
printf("%5s",str);
printf(" ");
printf("%5.2lf",ave[0]);
printf("%6.2lf",ave[1]);
printf("%6.2lf",ave[2]);
printf("%6.2lf",ave[3]);
printf("%6.2lf",ave[4]);
printf("\n");
break;
}
case 8:
{
system("cls");
n-=n;
n+=read(Max,Class);
break;
}
case 9:
{
system("cls");
save(n,Class);
break;
}
default :
{
break;
}
}
}
}
int main()
{
struct Stu Class [Max];
menu(Class);
return 0;
}
吼吼才上线，我这边也有，还需要吗朋友
吼吼才上线，我这边也有，还需要吗朋友