學生信息管理系統包括了輸入、查詢、修改、刪除等操作。
代碼：
#define MAX 1000//最大存儲人數
//個人信息
typedef struct Student
{
char num[10];//編號
char name[15];//姓名
int chinese;//語文
int english;//英語
int math;//數學
int physical;//物理
int chemical;//化學
int biology;//生物
int Lgrade;//平時成績
int Fgrade;//期末成績
float ave;//總評成績
}Stu;
typedef struct GradeManage
{
Stu stu[MAX ];
int count;
}Tele, * ptele;
void initiate(ptele ptele);//啓動
void Add(ptele ptele);//輸入學生人數，最多輸入1000個
void Search(ptele ptxl);//查找學生人數，按姓名查找
void Display(ptele ptxl);//顯示學生通訊錄中所有人
void Modify(ptele ptele);//修改學生某一人的信息
void Delete(ptele ptxl);//刪除某一人的信息
void Save(ptele ptxl);//保存學生信息到文件中
void menu();//菜單
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( "錄入學生已滿!\n" );
return;
}
cout<< "學號:";
cin>> ptele->stu[ptele ->count].num;
cout << "姓名:";
cin>> ptele->stu[ptele ->count].name;
cout << "語文:";
cin >> ptele->stu[ptele ->count].chinese;
cout << "英語:";
cin >> ptele->stu[ptele ->count].english;
cout << "數學:";
cin >> ptele->stu[ptele ->count].math;
cout << "物理:";
cin >> ptele->stu[ptele ->count].physical;
cout << "化學:";
cin >> ptele->stu[ptele ->count].chemical;
cout << "生物:";
cin >> ptele->stu[ptele ->count].biology;
cout << "平時成績:" ;
cin >> ptele->stu[ptele ->count].Lgrade;
cout << "期末成績:" ;
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( "錄入成功!\n" );
}
void Search(ptele ptxl)
{
int ret = 0;
char name[10];
cout<< "請輸入要查詢學生的姓名:" ;
cin>>name;
ret = hanshu( ptxl, name);
if (ret == -1)
{
cout << "沒有要找的人!" << endl;
return;
}
else
{
ptxl->stu[ptxl ->count].ave = (ptxl->stu[ptxl ->count].Lgrade*0.3) + (ptxl->stu[ptxl ->count].Fgrade*0.7);
cout << "學號\t姓名 語文 英語 數學 物理 化學 生物 平時成績 期末成績 總評成績" << 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<< "請輸入要修改人的姓名:" ;
cin>>name;
ret = hanshu( ptele, name);
if (ret == -1)
{
cout << "不存在要修改的人!" << endl;
return;
}
else
{
cout << "學號:";
cin >> ptele->stu[ret].num;
cout << "姓名:";
cin >> ptele->stu[ret].name;
cout << "語文:";
cin >> ptele->stu[ret].chinese;
cout << "英語:";
cin >> ptele->stu[ret].english;
cout << "數學:";
cin >> ptele->stu[ret].math;
cout << "物理:";
cin >> ptele->stu[ret].physical;
cout << "化學:";
cin >> ptele->stu[ret].chemical;
cout << "生物:";
cin >> ptele->stu[ret].biology;
cout << "平時成績:" ;
cin >> ptele->stu[ret].Lgrade;
cout << "期末成績:" ;
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 << "請輸入要刪除學生的姓名:" << endl;
cin>>name;
ret = hanshu( ptxl, name);
if (ret == -1)
{
cout << "沒有要刪除的學生!" << endl;
return;
}
else
{
for (j = ret; j < ptxl ->count - 1; j++)
{
ptxl->stu[j] = ptxl ->stu[j + 1];
}
}
ptxl->count--;
cout << "刪除學生成功!" << endl;
}
void Save(ptele ptxl)
{
FILE* fp;
int i = 0;
if ((fp = fopen("manage.txt" , "ab+")) == NULL)
{
cout << "不能打開" << endl;;
exit( EXIT_SUCCESS);
}
fprintf(fp, "學號\t姓名 語文 英語 數學 物理 化學 生物 平時成績 期末成績 總評成績" );
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 << "學號\t姓名 語文 英語 數學 物理 化學 生物 平時成績 期末成績 總評成績" << 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 << "* 學生成績管理系統 " << endl;
cout << "*******************************************************" << endl;
cout << "設計人：高鐸 班級：信息143 學號：201412030305" << endl;
cout << "*******************************************************" << endl;
cout << "* 1 錄入學生信息 " << endl;
cout << "* 2 顯示學生信息 " << endl;
cout << "* 3 查詢學生信息 " << endl;
cout << "* 4 修改學生信息 " << endl;
cout << "* 5 刪除學生信息 " << endl;
cout << "* 6 保存學生信息 " << 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請選擇自己的操作<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;
}