#include
#include
using namespace std;
const int N=5
;
class student
{
char n_name[10];
char n_numble[5];
char n_sex[3];
float score[4];//score[0]英语成绩，score[1]数学成绩,score[2]语文成绩，score[3]平均分
public:
student();
student(char name[],char numble[],char sex[],float a,float b,float c);
student(student &s);
void input();//输入学生信息：姓名，学号，性别，英语，数学，语文
float pj();//获取平均分
void stu_delete(student stu[]);//删除
void stu_find(student stu[]);
void dispaly();//显示学生信息：姓名，学号，性别，英语，数学，语文，平均分
};
student::student()
{
strcpy(n_numble,"000");
strcpy(n_name,"noname");
strcpy(n_sex,"male");
score[0]=88;
score[1]=99;
score[2]=95;
score[3]=94;
}
student::student(char name[],char numble[],char sex[],float a,float b,float c)
{
strcpy(n_name,name);
strcpy(n_numble,numble);
strcpy(n_sex,sex);
score[0]=a;
score[1]=b;
score[2]=c;
score[3]=(score[0]+score[1]+score[2])/3.0;
}
student::student(student &s)
{
strcpy(n_name,s.n_name);
strcpy(n_numble,s.n_numble);
strcpy(n_sex,s.n_sex);
score[0]=s.score[0];
score[1]=s.score[1];
score[2]=s.score[2];
score[3]=(score[0]+score[1]+score[2])/3.0;
}
void student::input()
{
cout<<"输入学生信息："< cout<<"请依次输入姓名，学号，性别，英语，数学，语文"< cin>>n_name>>n_numble>>n_sex>>score[0]>>score[1]>>score[2];
score[3]=(score[0]+score[1]+score[2])/3.0;
}
float student::pj()
{
return score[3];
}
void student::stu_delete(student stu[])
{
student t;
int i,k,j;
char d_numble[5];
cout<<"请输入要删除的学生学号:";
cin>>d_numble;
for(i=0;i {
j=i;
k=strcmp(stu[i].n_numble,d_numble);
if(k==0&&i!=N)
{
for(;j stu[j]=stu[j+1];
}
if(k==0&&i==N)
{
strcpy(stu[N].n_numble,"0000");
strcpy(stu[N].n_name,"noname");
strcpy(stu[N].n_sex,"男");
stu[N].score[0]=0;
stu[N].score[1]=0;
stu[N].score[2]=0;
stu[N].score[3]=0;
}
}
}
void student::stu_find(student stu[])
{
int i,k;
char d_numble[5];
cout<<"请输入要查询学生的学号:";
cin>>d_numble;
for(i=0;i{
k=strcmp(stu[i].n_numble,d_numble);
if(k==0)
{
stu[i].dispaly();
}
}
}
void student::dispaly()
{
cout<<"姓名:"<}
class manage_stu
{
//private:
student stu[N+1];//定义N+1名学生空间
public:
void input_stu();//输入N名学生信息
void delete_stu();//删除指定学号的学生信息
void find_stu();//查找指定学号的学生并显示
void total_stu();//分别求每个人的总分
void sort_stu();//按总分高低排序，排序后的结果显示并生成文件sortstu.txt
void display_stu();//显示N名学生信息
};
void manage_stu::input_stu()//输入N名学生信息
{
int i;
for(i=0;i stu[i].input();
}
void manage_stu::delete_stu()//删除指定学号的学生信息
{
student r;
r.stu_delete(stu);
}
void manage_stu::find_stu()//查找指定学号的学生并显示
{
student t;
t.stu_find(stu);
}
void manage_stu::total_stu()//分别求每个人的总分
{
int i;
for(i=0;i stu[i].pj();
}
void manage_stu::sort_stu()
{
int i,j;
student a;
for(i=0;i {
for(j=i;j {
if(stu[i].pj() {
a=stu[i];
stu[i]=stu[j];
stu[j]=a;
}
}
}
}
void manage_stu::display_stu()//显示N名学生信息
{
student t;
int i;
for(i=0;i stu[i].dispaly();
}
void main()
{
int i=1,c;
manage_stu s;
while(i)
{
cout<<"学生管理系统："< cout<<"1、录入学生信息"< cout<<"2、查找"< cout<<"3、排序"< cout<<"4、删除"<cout<<"5、显示几名学生信息"< cout<<"6、退出系统"< cout<<"请选择(1--6):";
cin>>c;
switch(c)
{
case 1:s.input_stu();break;
case 2:s.find_stu();break;
case 3:s.sort_stu();break;
case 4:s.delete_stu();break;
case 5:s.display_stu();break;
case 6:i=0;
}
}
}
