学生成绩管理系统设计C++

2024-11-18 09:51:34
推荐回答(2个)
回答1:

#include
#include
#include
#include
#include
#include
#include
using namespace std;
typedef struct
{
char num[10];
char cla[10];
char name[20];
char chian[10];
char shuxue[20];
char english[10];
char jsj[20];
}Student;
Student stu[80];
int menu()
{
char c;
for(;c<'0'||c>'9';)
{
system("cls");
cout<<"欢迎使用我们的程序。"< cout<<"编程人员:彭正直,段传奇,赖胜莲,张弋寒,杨斌,朴惠燕,赵晨春,于鹏龙,姜淼.";
cout< cout<<"************** 学生成绩管理系统 ************** "< cout< cout< cout< cout< cout< cout<者蠢 cout< cout< cout< cout< cout< cout<<"请选择(0-10):";
c=getchar();
}
return(c-'0');
}

int Input(Student stud[],int n) //输入数据。
{
int i=0;
char sign,x[10];
for(;sign != 'n' && sign != 'N';)
{
cout< cin>>stud[n+i].cla;

cout< cin>>stud[n+i].num;

cout< cin>>stud[n+i].name;

cout< cin>>stud[n+i].chian;

cout< cin>>stud[n+i].shuxue;

cout< cin>>stud[n+i].english;

cout< cin>>stud[n+i].jsj;

gets(x);
cout< cout<<"还有要输入的信息吗?(y/n)";
cin>>&sign;
i++;
}
return(n+i);
}

void Display(Student stud[], int n) //输出数据首粗陪。
{
int i;
cout< cout< cout< cout< for(i=1;i {
printf("\t\t%-9s%-9s%-9s%-9s%-9s%-9s%-9s\n",stud[i-1].cla,stud[i-1].num,stud[i-1].name,stud[i-1].chian,stud[i-1].shuxue,stud[i-1].english,stud[i-1].jsj);
if(i>1 && i%10==0)
{
cout< cout< system("pause");
cout< }
}
cout< system("pause");
}

void Sort(Student stud[],int n) //按名字排序。
{
int i,j;
char t[20];
for(i=0;i for(j=0;j if(strcmp(stud[j].num,stud[j+1].num)>0)
{
strcpy(t,stud[j+1].cla);
strcpy(stud[j+1].cla,stud[j].cla);
strcpy(stud[j].cla,t);

strcpy(t,stud[j+1].num);
strcpy(stud[j+1].num,stud[j].num);
strcpy(stud[j].num,t);

strcpy(t,stud[j+1].name);
strcpy(stud[j+1].name,stud[j].name);
strcpy(stud[j].name,t);

strcpy(t,stud[j+1].chian);
strcpy(stud[j+1].name,stud[j].chian);
strcpy(stud[j].chian,t);

strcpy(t,stud[j+1].shuxue);
strcpy(stud[j+1].name,stud[j].shuxue);
strcpy(stud[j].shuxue,t);

strcpy(t,stud[j+1].english);
strcpy(stud[j+1].name,stud[j].english);
strcpy(stud[j].english,t);

strcpy(t,stud[j+1].jsj);
strcpy(stud[j+1].name,stud[j].jsj);
strcpy(stud[j].jsj,t);

}
cout<}

int Insert(Student stud[],int n) //插入一条学生信息。
{
char x[10];
cout< cin>>stud[n].cla;

cout< cin>>stud[n].num;

cout< cin>>stud[n].name;

cout< cin>>stud[n].chian;

cout< cin>>stud[n].shuxue;

cout< cin>>stud[n].english;

cout< cin>>stud[n].jsj;

gets(x);
n++;
cout< return(n);
}

int Delete(Student stud[],int n) //按名字查找信息,删除信息。
{
char s[20];
int i=0,j;
cin>>s;
while(strcmp(stud[i].name,s)!=0&&i if(i==n)
{
printf("\t\t\t没有发现!\n"); /*返回失败信息*/
return(n);
}
for(j=i;j {
strcpy(stud[j].num,stud[j+1].num);
strcpy(stud[j].name,stud[j+1].name);
strcpy(stud[j].cla,stud[j+1].cla);
strcpy(stud[j].chian,stud[j+1].chian);
strcpy(stud[j].shuxue,stud[j+1].shuxue);
strcpy(stud[j].english,stud[j+1].english);
strcpy(stud[j].jsj,stud[j+1].jsj);
}
cout< return(n-1);
}

void Query(Student stud[],int n) //按名字查找信息
{
char s[20];
int i=0;
cout< cin>>s;
while(strcmp(stud[i].name,s)!=0&&i i++; /*查找判断*/
if(i==n)
{
printf("\t\t\t没有发现!\n"); /*输入失败信息*/
return;
}
cout< cout< cout< cout< cout<}

int Xiugai(Student stud[],int n) //修改信息。
{
n=Delete(stud,n);
cout< n=Insert(stud,n);
cout< return(n);
}

int AddfromText(Student stud[], int n) //从文件中读入数据。
{
int i=0,num;
FILE *fp;
char filename[20];
cout< cin>>filename;
if((fp=fopen(filename,"rb"))==NULL)
{
cout< cout< system("pause");
return(n);
}
fscanf(fp,"%d",&num);
for(;i {
fscanf(fp,"%s%s%s%s%s%s%s",stud[n+i].cla,stud[n+i].num,stud[n+i].name,stud[n+i].chian,stud[n+i].shuxue,stud[n+i].english,stud[n+i].jsj);
i++;
}
n+=num;
fclose(fp);
cout< cout< system("pause");
return(n);

}

void WritetoText(Student stud[],int n) //将所有记录写入文件。
{
int i=0;
FILE *fp;
char filename[20];
cout< cout< cin>>filename;
if((fp=fopen(filename,"w"))==NULL)
{
cout< system("pause");
return;
}
fprintf(fp,"%d\n",n);
for(;i {
fprintf(fp,"%-6s%-5s%-5s%-5s%-5s%-5s%-5s\n",stud[i].cla,stud[i].num,stud[i].name,stud[i].chian,stud[i].shuxue,stud[i].english,stud[i].jsj);
i++;
}
fclose(fp);
cout< int b;
cout< cout< cout< cin>>b;
if(b==0)
{
cout< cout< system("pause");
exit(0);
}
}

void main() //主函数调用。
{
int n=0;
for(;;)
{
switch(menu())
{
case 1:
cout< n=Input(stu,n);
break;
case 2:
cout< Display(stu,n);
break;
case 3:
cout< Sort(stu,n);
cout< system("pause");
break;
case 4:
cout< n=Insert(stu,n);
cout< system("pause");
break;
case 5:
cout< cout< n=Delete(stu,n);
cout< system("pause");
break;
case 6:
cout< Query(stu,n);
cout< system("pause");
break;
case 7:
cout< cout< n=Xiugai(stu,n);
system("pause");
break;
case 8:
cout< n=AddfromText(stu,n);
break;
case 0:
cout< WritetoText(stu,n);
cout< system("pause");
break;

}
}
}

回答2:

我介绍吵历一个给你,是别人写的。
大约有这些功能。
http://zhidao.baidu.com/question/99792886.html

数据录入;
增加人绝埋员;
删除人员;
修改数据;
查询
按总成绩查询
按姓名查询
输出所有学生的数据
按总分查询排名;
按语文查询并碰蚂排名;
按数学查询排名;

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