学生信息管理系统包括了输入、查询、修改、删除等操作。
代码：
#define MAX 1000//最大存储人数
//个人信息
typedef struct Student
{
char num[10];//编号
char name[15];//姓名
int chinese;//语文
int english;//英语
int math;//数学
int physical;//物理
int chemical;//化学
int biology;//生物
int Lgrade;//平时成绩
int Fgrade;//期末成绩
float ave;//总评成绩
}Stu;
typedef struct GradeManage
{
Stu stu[MAX ];
int count;
}Tele, * ptele;
void initiate(ptele ptele);//启动
void Add(ptele ptele);//输入学生人数，最多输入1000个
void Search(ptele ptxl);//查找学生人数，按姓名查找
void Display(ptele ptxl);//显示学生通讯录中所有人
void Modify(ptele ptele);//修改学生某一人的信息
void Delete(ptele ptxl);//删除某一人的信息
void Save(ptele ptxl);//保存学生信息到文件中
void menu();//菜单
void initiate(ptele ptele)
{
ptele->count = 0;
}
static int hanshu(ptele ptele, const char * name)
{
int i = 0;
for (i = 0; i < ptele ->count; i++)
{
if (strcmp(name , ptele->stu[i].name) == 0)
{
return i;
}
}
return -1;
}
void Add(ptele ptele)
{
if (ptele ->count == MAX)
{
printf( "录入学生已满!\n" );
return;
}
cout<< "学号:";
cin>> ptele->stu[ptele ->count].num;
cout << "姓名:";
cin>> ptele->stu[ptele ->count].name;
cout << "语文:";
cin >> ptele->stu[ptele ->count].chinese;
cout << "英语:";
cin >> ptele->stu[ptele ->count].english;
cout << "数学:";
cin >> ptele->stu[ptele ->count].math;
cout << "物理:";
cin >> ptele->stu[ptele ->count].physical;
cout << "化学:";
cin >> ptele->stu[ptele ->count].chemical;
cout << "生物:";
cin >> ptele->stu[ptele ->count].biology;
cout << "平时成绩:" ;
cin >> ptele->stu[ptele ->count].Lgrade;
cout << "期末成绩:" ;
cin >> ptele->stu[ptele ->count].Fgrade;
ptele->stu[ptele ->count].ave = (ptele->stu[ptele ->count].Lgrade*0.3) + (ptele->stu[ptele ->count].Fgrade*0.7);
ptele->count++;
printf( "录入成功!\n" );
}
void Search(ptele ptxl)
{
int ret = 0;
char name[10];
cout<< "请输入要查询学生的姓名:" ;
cin>>name;
ret = hanshu( ptxl, name);
if (ret == -1)
{
cout << "没有要找的人!" << endl;
return;
}
else
{
ptxl->stu[ptxl ->count].ave = (ptxl->stu[ptxl ->count].Lgrade*0.3) + (ptxl->stu[ptxl ->count].Fgrade*0.7);
cout << "学号\t姓名 语文 英语 数学 物理 化学 生物 平时成绩 期末成绩 总评成绩" << endl;
cout << ptxl->stu[ret].num << " " << ptxl->stu[ret].name << " " << ptxl->stu[ret].chinese
<< " " << ptxl ->stu[ret].english << " " << ptxl->stu[ret].math << " " << ptxl->stu[ret].physical
<< " " << ptxl ->stu[ret].chemical << " " << ptxl->stu[ret].biology << " " << ptxl->stu[ret].Lgrade
<< " " << ptxl->stu[ret].Fgrade << " " << ptxl->stu[ret].ave <<endl;
}
}
void Modify(ptele ptele)
{
int ret = 0;
char name[10];
cout<< "请输入要修改人的姓名:" ;
cin>>name;
ret = hanshu( ptele, name);
if (ret == -1)
{
cout << "不存在要修改的人!" << endl;
return;
}
else
{
cout << "学号:";
cin >> ptele->stu[ret].num;
cout << "姓名:";
cin >> ptele->stu[ret].name;
cout << "语文:";
cin >> ptele->stu[ret].chinese;
cout << "英语:";
cin >> ptele->stu[ret].english;
cout << "数学:";
cin >> ptele->stu[ret].math;
cout << "物理:";
cin >> ptele->stu[ret].physical;
cout << "化学:";
cin >> ptele->stu[ret].chemical;
cout << "生物:";
cin >> ptele->stu[ret].biology;
cout << "平时成绩:" ;
cin >> ptele->stu[ret].Lgrade;
cout << "期末成绩:" ;
cin >> ptele->stu[ret].Fgrade;
}
ptele->stu[ptele ->count].ave = (ptele->stu[ptele ->count].Lgrade*0.3) + (ptele->stu[ptele ->count].Fgrade*0.7);
cout << "修改成功!" << endl;
}
void Delete(ptele ptxl)
{
int ret = 0;
int j = 0;
char name[10];
cout << "请输入要删除学生的姓名:" << endl;
cin>>name;
ret = hanshu( ptxl, name);
if (ret == -1)
{
cout << "没有要删除的学生!" << endl;
return;
}
else
{
for (j = ret; j < ptxl ->count - 1; j++)
{
ptxl->stu[j] = ptxl ->stu[j + 1];
}
}
ptxl->count--;
cout << "删除学生成功!" << endl;
}
void Save(ptele ptxl)
{
FILE* fp;
int i = 0;
if ((fp = fopen("manage.txt" , "ab+")) == NULL)
{
cout << "不能打开" << endl;;
exit( EXIT_SUCCESS);
}
fprintf(fp, "学号\t姓名 语文 英语 数学 物理 化学 生物 平时成绩 期末成绩 总评成绩" );
fprintf(fp, "\r\n");
for (i = 0; i < ptxl ->count; i++)
{
fprintf(fp, "%2s %s %d %d %d %d %d %d %d %d %f\n",
ptxl->stu[i].num, ptxl ->stu[i].name, ptxl->stu[i].chinese, ptxl ->stu[i].english,
ptxl->stu[i].math, ptxl ->stu[i].physical, ptxl->stu[i].chemical, ptxl ->stu[i].biology,
ptxl->stu[i].Lgrade, ptxl ->stu[i].Fgrade, ptxl->stu[i].ave);
fprintf(fp, "\r\n");
}
fclose(fp);
cout << "保存到文件中成功!" << endl;
}
void Display(ptele ptxl)
{
int i = 0;
cout << "学号\t姓名 语文 英语 数学 物理 化学 生物 平时成绩 期末成绩 总评成绩" << endl;
for (i = 0; i < ptxl ->count; i++)
{
cout << ptxl->stu[i].num << " " << ptxl->stu[i].name << " " << ptxl->stu[i].chinese
<< " " << ptxl ->stu[i].english << " " << ptxl->stu[i].math << " " << ptxl->stu[i].physical
<< " " << ptxl ->stu[i].chemical << " " << ptxl->stu[i].biology << " " << ptxl->stu[i].Lgrade
<< " " << ptxl->stu[i].Fgrade << " " << ptxl->stu[i].ave << endl;
}
}
void menu()
{
cout << "*******************************************************" << endl;
cout << "* 学生成绩管理系统 " << endl;
cout << "*******************************************************" << endl;
cout << "设计人：高铎 班级：信息143 学号：201412030305" << endl;
cout << "*******************************************************" << endl;
cout << "* 1 录入学生信息 " << endl;
cout << "* 2 显示学生信息 " << endl;
cout << "* 3 查询学生信息 " << endl;
cout << "* 4 修改学生信息 " << endl;
cout << "* 5 删除学生信息 " << endl;
cout << "* 6 保存学生信息 " << endl;
cout << "* 0 退出 " << endl;
cout << "*******************************************************" << endl;
}
#define _CRT_SECURE_NO_WARNINGS 1
#include<iostream>
using namespace std;
#include "Studdent.h"
int main()
{
Tele ptele;
int input = 1;
initiate(&ptele);
system( "color a");
while (input)
{
menu();
cout << "\t\t请选择自己的操作<0~5>:" ;
cin >> input;
switch (input)
{
case 1:Add(&ptele);
break;
case 2:Display(&ptele);
break;
case 3:Search(&ptele);
break;
case 4:Modify(&ptele);
break;
case 5:Delete(&ptele);
break;
case 6:Save(&ptele);
break;
case 0:exit(EXIT_SUCCESS );
break;
}
}
return 0;
}原文地址：http://mnt3918290.blog.51cto.com/10729316/1827047
