``# include
include
include
using namespace std;
class StudentMessage
{
public:
string name;
int ID;
int num;
float Score[3];
} ;
class Student:public StudentMessage
{
private:
float sum;
float ave;
Student *s;
public:
~Student();
void input(void);
void output(void);
void search(void);
void remove(void);
void change(void);
void MathsRank(void);
void EnglishRank(void);
void CRank(void);
void SumRank(void);
};
Student::~Student()
{
delete(s);
}
void Student::input(void)
{
int i,num;
cout<<"请输入学生的人数：";
cin>>num;
s= new Student[num];
for(i=1;i<=num;i++)
{
cout<<"请输入第"<
cin>>s[i-1].name;
cout<<"请输入第"<
cin>>s[i-1].ID;
cout<<"请输入第"<
cin>>s[i-1].Score[0];
cout<<"请输入第"<
cin>>s[i-1].Score[1];
cout<<"请输入第"<
cin>>s[i-1].Score[2];
s[i-1].sum = s[i-1].Score[0] + s[i-1].Score[1] + s[i-1].Score[2];
s[i-1].ave = s[i-1].sum /3;
}
}
void Student::output(void)
{
int i;
for(i=1;i<=num;i++)
{
cout<<"姓名："<
}
}
void Student::search(void)
{
string name;
cout
cin>>name;
int i;
for(i=1; i<=num; i++)
{
if(name == s[i-1].name)
{
break;
}
}
cout<<"姓名："<<s[i-1].name<<endl<<"学号："<<s[i-1].ID<<endl<<"数学成绩："<<s[i-1].Score[0]<<endl<<"英语成绩："<<s[i-1].Score[1]<<endl<<"C++成绩："<<s[i-1].Score[2]<<endl<<"总分："<<s[i-1].sum<<endl<<"平均分："<<s[i-1].ave<<endl;
}
void Student::remove(void)
{
int n,i,j;
string name;
cout<<"请输入需要删除的学生的姓名：";
cin>>name;
for(i=1;i<=num;i++)
{
if(name==s[i-1].name)
{
n=i;
}
}
for(j=n+1;j<num;j++)
{
s[j-2]=s[j-1];
}
num=num-1;
}
void Student::change(void)
{
int i;
string n;
cout<<"请输入需要修改的学生的姓名：";
cin>>n;
for(i=0;i
{
if(n==s[i].name)
{
break;
}
}
cout
cout
cout
cin>>s[i].name;
cout<<"请输入该学生的学号：";
cin>>s[i].ID;
cout<<"请输入该学生的数学成绩：";
cin>>s[i].Score[0];
cout<<"请输入该学生的英语成绩：";
cin>>s[i].Score[1];
cout<<"请输入第该学生的C++成绩：";
cin>>s[i].Score[2];
s[i].sum = s[i].Score[0] + s[i].Score[1] + s[i].Score[2];
s[i].ave = s[i].sum / 3;
}
void Student::MathsRank(void)
{
int i,t;
for(i=1;i<=num;i++)
{
if(s[i].Score[0] > s[i-1].Score[0] && i-1>=0)
{
t=s[i-1].Score[0];
s[i-1].Score[0]=s[i].Score[0];
s[i].Score[0]=t;
}
cout<
}
}
void Student::EnglishRank(void)
{
int i,t;
for(i=1;i
{
if(s[i].Score[1] > s[i-1].Score[1] && i-1>=0)
{
t=s[i-1].Score[1];
s[i-1].Score[1]=s[i].Score[1];
s[i].Score[1]=t;
}
cout<
}
}
void Student::CRank(void)
{ int i,t;
for(i=1;i
{
if(s[i].Score[2] > s[i-1].Score[2] && i-1>=0)
{
t=s[i-1].Score[2];
s[i-1].Score[2]=s[i].Score[2];
s[i].Score[2]=t;
}
cout<<s[i-1].Score[2]<<endl;
}
}
void Student::SumRank(void)
{
int i,t;
for(i=1;i<=num;i++)
{
if(s[i].sum > s[i-1].sum && i-1>=0)
{
t=s[i-1].sum;
s[i-1].sum=s[i].sum;
s[i].sum=t;
}
cout<<s[i-1].sum<<endl;
}
}
int main()
{
cout<<"欢迎使用学生成绩管理系统"<<endl<<endl;
cout<<"请按任意将进入学生管理系统:"<<endl<<endl;
cout<<"请选择要操作的命令:"<<endl<<endl;
cout<<"1 输入学生信息"<<endl<<endl;
cout<<"2 输出学生信息"<<endl<<endl;
cout<<"3 查找学生信息"<<endl<<endl;
cout<<"4 删除学生信息"<<endl<<endl;
cout<<"5 修改学生信息"<<endl<<endl;
cout<<"6 学生数学成绩的排名"<<endl<<endl;
cout<<"7 学生英语成绩的排名"<<endl<<endl;
cout<<"8 学生C++成绩的排名"<<endl<<endl;
cout<<"9 学生成绩总分的排名"<<endl<<endl;
int i;
Student s;
while(1)
{
cout<<"请选择操作命令:";
cin>>i;
switch(i)
{
case 1:
s.input();
break;
case 2:
s.output();
break;
case 3:
s.search();
break;
case 4:
s.remove();
break;
case 5:
s.change();
break;
case 6:
s.MathsRank();
s.output();
break;
case 7:
s.EnglishRank();
s.output();
break;
case 8:
s.CRank();
s.output();
break;
case 9:
s.SumRank();
s.output();
break;
default:
break;
}
}
return 0;
}
`
