C语言 简单学生成绩管理系统

#include
#include
#include 知氏铅
#include
using namespace std;
struct student //定义学生类
{
int num; //学号
char name[8]; //姓名
char classes[20]; //班别
int math,english,computer,sum; //数学，英语，计算机，平均总成绩
};
int s=0; //全局变量
class student1
{
private:
student stu[40]; //结构体变量
char name, classes;
int num;
int math,english,computer,sum;
public:
void input(int, char *, char *, int, int, int);
void output(int);
int check(int stu_num)
{
int m=0;
while(m<=s+1)
if(stu_num==stu[m++].num)
{
return 1;
break;
}
if(m>s+1)
return 0;
else
return 1;
}
void search(int);
void search1(int);
void deleted(int);
void deleted1(int);
void desc(int);
void desc1(int);
void desc2(int);
};
void student1::input(int stu_num,char *stu_name, char *stu_classes, int stu_math, int stu_english, int stu_computer) //输入模块
{
stu[s].num=stu_num;
strcpy(stu[s].name, stu_name);
strcpy(stu[s].classes, stu_classes);
stu[s].math=stu_math;
stu[s].english=stu_english;
stu[s].computer=stu_computer;
}
void student1::output(int s) //输出模块
{
cout << s << "\t";
cout << stu[s].num << "\t";
cout << stu[s].name << "\t";
cout << stu[s].classes << "\t";
cout << stu[s].math << "\t\t";
cout << stu[s].english << "\t\t";
cout << stu[s].computer << "\t\n";
}
void student1::search(int s) //查找模块
{
int stu_num,p;
while (s==0)
{
cout <<"没有记录,请先输入记录!" < break;
}
if (s!=0)
{
cout << "请输入你要查找的学号:";
cin >> stu_num;
while (stu_num<100000 || stu_num>999999) //判断学号是否正确
{
cin.clear();
rewind(stdin);
cout << "你输入的学号不正确，请输入一个搭好六位数的学号" << endl;
cin >> stu_num;
}
while (s!=0) //查找是否有核尺符合条件的记录
{
p=1;
if (stu_num==stu[s].num)
{
cout << "学号\t姓名\t班级\t数学成绩\t英语成绩\t计算机成绩\t" << endl;
cout << stu[s].num << "\t";
cout << stu[s].name << "\t";
cout << stu[s].classes << "\t";
cout << stu[s].math << "\t\t";
cout << stu[s].english << "\t\t";
cout << stu[s].computer << "\t\n";
getch();
break;
}
else
p=0;
s--;
}
if (p==0)
cout << "没有找到你要查找的记录!" << endl;
}
getch();
}
void student1::search1(int s) //按姓名查找模块
{
char stu_name[8],p;
while (s==0)
{
cout <<"没有记录,请先输入记录!" < break;
}
if (s!=0)
{
cout << "请输入你要查找的姓名:";
cin >> stu_name;
while (s!=0) //查找是否有符合条件的记录
{
p=1;
if (strcmp(stu_name, stu[s].name)==0)
{
cout << "学号\t姓名\t班级\t数学成绩\t英语成绩\t计算机成绩\t" << endl;
cout << stu[s].num << "\t";
cout << stu[s].name << "\t";
cout << stu[s].classes << "\t";
cout << stu[s].math << "\t\t";
cout << stu[s].english << "\t\t";
cout << stu[s].computer << "\t\n";
getch();
break;
}
else
p=0;
s--;
}
if (p==0)
cout << "没有找到你要查找的记录!" << endl;
}
getch();
}
void student1::deleted(int n) //删除模块
{
int stu_num,p;
char yes;
while (s==0)
{
cout << "没有记录，请先输入记录!" << endl;
break;
}
if (s!=0)
{
cout << "请输入要删除的学号:";
cin >> stu_num;
while (stu_num<100000 || stu_num>999999)
{
cin.clear();
rewind(stdin);
cout << "你输入的学号不正确，请输入一个六位数的学号" << endl;
cout << "学号:";
cin >> stu_num;
}
for (int i=1;i<=n;i++)
{
if (stu[i].num!=stu_num)
p=0;
if (stu[i].num==stu_num)
{
cout << "学号\t姓名\t班级\t数学成绩\t英语成绩\t计算机成绩\t" < cout << stu[i].num << "\t";
cout << stu[i].name << "\t";
cout << stu[i].classes << "\t";
cout << stu[i].math << "\t\t";
cout << stu[i].english << "\t\t";
cout << stu[i].computer << endl;
cout << "你确定要删除此学生记录吗?(y/n)";
cin >> yes;
if (yes == 'y' || yes == 'Y')
{
for (int j=1; j<=n-1; j++) //删除记录
{
stu[j].num=stu[j+1].num;
strcpy(stu[j].name, stu[j+1].name);
strcpy(stu[j].classes, stu[j+1].classes);
stu[j].math=stu[j+1].math;
stu[j].english=stu[j+1].english;
stu[j].computer=stu[j+1].computer;
}
cout << "学生记录删除成功" < s=s-1;
p=1;
break;
}
else
{
cout << "学生记录删除失败" << endl;
p=1;
}
}
}
if (p==0)
cout << "没有找到你要查找的记录!" <}
getch();
}
void student1::deleted1(int n) //按姓名删除模块
{
char stu_name[8],p;
char yes;
while (s==0)
{
cout << "没有记录，请先输入记录!" << endl;
break;
}
if (s!=0)
{
cout << "请输入要删除的姓名:";
cin >> stu_name;
for (int i=1;i<=n;i++)
{
if (strcmp(stu[i].name, stu_name)<0 || strcmp(stu[i].name, stu_name)>0)
p=0;
if (strcmp(stu[i].name, stu_name)==0)
{
cout << "学号\t姓名\t班级\t数学成绩\t英语成绩\t计算机成绩\t" < cout << stu[i].num << "\t";
cout << stu[i].name << "\t";
cout << stu[i].classes << "\t";
cout << stu[i].math << "\t\t";
cout << stu[i].english << "\t\t";
cout << stu[i].computer << endl;
cout << "你确定要删除此学生记录吗?(y/n)";
cin >> yes;
if (yes == 'y' || yes == 'Y')
{
for (int j=1; j<=n-1; j++) //删除记录
{
stu[j].num=stu[j+1].num;
strcpy(stu[j].name, stu[j+1].name);
strcpy(stu[j].classes, stu[j+1].classes);
stu[j].math=stu[j+1].math;
stu[j].english=stu[j+1].english;
stu[j].computer=stu[j+1].computer;
}
cout << "学生记录删除成功" < s=s-1;
p=1;
break;
}
else
{
cout << "学生记录删除失败" << endl;
p=1;
}
}
}
if (p==0)
cout << "没有找到你要查找的记录!" <}
getch();
}
void student1::desc1(int s) //按学号排序
{
int temp;
int sum[40];
while (s==0)
{
cout << "没有记录,请先输入记录!" < break;
}
if (s!=0)
{
cout << "学号\t姓名\t班级\t数学成绩\t英语成绩\t计算机成绩\t" < for (int k=1;k<=s;k++)
sum[k]=stu[k].num;
for (int i=1;i<=s;i++) //利用冒泡法对sum[]进行排序
for (int j=1;j<=s-i;j++)
if (sum[j]>sum[j+1])
{
temp=sum[j];
sum[j]=sum[j+1];
sum[j+1]=temp;
}
for (int x=1;x<=s;x++) //输出与sum[]中相同总分所对应的内容
for (int y=1;y<=s;y++)
if (sum[x]==stu[y].num)
{
cout << stu[y].num << "\t";
cout << stu[y].name << "\t";
cout << stu[y].classes << "\t";
cout << stu[y].math << "\t\t";
cout << stu[y].english << "\t\t";
cout << stu[y].computer << "\t\t";
cout << endl;
}
}
getch();

}
void student1::desc2(int s) //按姓名排序
{
char sum[40][8];
char temp[8];
while (s==0)
{
cout << "没有记录,请先输入记录!" < break;
}
if (s!=0)
{
cout << "学号\t姓名\t班级\t数学成绩\t英语成绩\t计算机成绩\t" < for (int k=1;k<=s;k++)
strcpy(sum[k], stu[k].name);
for (int i=1;i<=s;i++) //利用冒泡法对sum[]进行排序
for (int j=1;j<=s-i;j++)
if (strcmp(sum[j], sum[j+1])>0)
{
strcpy(temp, sum[j]);
strcpy(sum[j], sum[j+1]);
strcpy(sum[j+1], temp);
}
for (int x=1;x<=s;x++) //输出与sum[]中相同总分所对应的内容
for (int y=1;y<=s;y++)
if (strcmp(sum[x], stu[y].name)==0)
{
cout << stu[y].num << "\t";
cout << stu[y].name << "\t";
cout << stu[y].classes << "\t";
cout << stu[y].math << "\t\t";
cout << stu[y].english << "\t\t";
cout << stu[y].computer << "\t\t";
cout << endl;
}
}
getch();
}
void student1::desc(int s) //平均成绩排序模块
{
int temp;
int sum[40];
while (s==0)
{
cout << "没有记录,请先输入记录!" < break;
}
if (s!=0)
{
cout << "学号\t姓名\t班级\t数学成绩\t英语成绩\t计算机成绩\t平均成绩" < for (int k=1;k<=s;k++)
{
sum[k]=(stu[k].math+stu[k].english+stu[k].computer)/3; //平均成绩
stu[k].sum=(stu[k].math+stu[k].english+stu[k].computer)/3;
}
for (int i=1;i<=s;i++) //利用冒泡法对sum[]进行排序
for (int j=1;j<=s-i;j++)
if (sum[j] {
temp=sum[j];
sum[j]=sum[j+1];
sum[j+1]=temp;
}
for (int x=1;x<=s;x++) //输出与sum[]中相同总分所对应的内容
for (int y=1;y<=s;y++)
if (sum[x]==stu[y].sum)
{
cout << stu[y].num << "\t";
cout << stu[y].name << "\t";
cout << stu[y].classes << "\t";
cout << stu[y].math << "\t\t";
cout << stu[y].english << "\t\t";
cout << stu[y].computer << "\t\t";
cout << stu[y].sum << endl;
}
}
getch();
}
int main(int argc, char *argv[])
{
student1 st;
char yes,choice;
char *name,*classes;
int math, english, computer, num;
time_t t;
time(&t);
while (1)
{
system("cls");
cout<< "\t--------------------------学生成绩管理系统--------------------------"< cout<< "\t\t\t时间:" << ctime(&t);
cout<<"--------------------------------------------------------------------------------\n"
<<" 1.增加学生成绩记录\n"
<<" 2.显示学生成绩记录\n"
<<" 3.查询学生成绩记录——按学号\n"
<<" 4.查询学生成绩记录——按姓名\n"
<<" 5.删除学生成绩记录——按学号\n"
<<" 6.删除学生成绩记录——按姓名\n"
<<" 7.排序学生成绩记录——按学号\n"
<<" 8.排序学生成绩记录——按姓名\n"
<<" 9.排序学生成绩记录——按平均成绩\n"
<<" 0.退出学生成绩管理系统\n"
<<"--------------------------------------------------------------------------------\n";
cout<<"提示：按0-6进行选择您要的服务";
cin >> choice;
t:
if (choice=='0')
break;
switch(choice)
{
case '1':
{
last:
cout << "请依次输入学生的学号,姓名,班级,数学成绩,英语成绩,计算机成绩——学号为6位数字"< name = new char[];
classes =new char[];
cin >> num >> name >> classes >> math >> english >> computer;
while (num<10000 || num>999999)
{
cin.clear();
rewind(stdin);
cout << "学号必须为6位数字，请重新输入学生信息" << endl;
cin >> num >> name >> classes >> math >> english >> computer;
}
while (st.check(num)) //调用CHECK模块判断学号是否重复
{
cin.clear();
cout << "学号重复,请重输入!" << endl;
cout << "学号:";
cin >> num;
}
s=s+1;
st.input(num,name,classes,math,english,computer);
cout << "是否要继续输入?(y/n)";
cin >> yes;
while (yes == 'y' || yes == 'Y')
{
goto last;
}
getch();
};break;
case '2':
{
if (s==0) //判断是否有记录输入
{
cout << "没有学生记录,请先输入记录!" << endl;
getch();
break;
}
if (s!=0)
{
cout << "序号" << "\t";
cout << "学号" << "\t";
cout << "姓名" << "\t";
cout << "班级" << "\t";
cout << "数学成绩" << "\t";
cout << "英语成绩" << "\t";
cout << "计算机成绩" << "\t";
for (int i=1;i<=s;i++)
st.output(i);
getch();
}
};break;
case '3':st.search(s);break;
case '4':st.search1(s);break;
case '5':st.deleted(s);break;
case '6':st.deleted1(s);break;
case '7':st.desc1(s);break;
case '8':st.desc2(s);break;
case '9':st.desc(s);break;
default:
{
while (choice=='0'||choice>'6')
{
cout << "错误选项, 请重新选择!" << endl;
cin >> choice;
}
goto t;
}break;
}
}
cout << "谢谢您的使用!" << endl;
return 0;
}

你再简单得改改就行了

你这分也太少了吧，，，估计没人会给你做的

才十分啊…

这可是一个系统啊，哪有那么简单就做了的啊。