学生系统

#include<iostream>
#include<vector>
using namespace std;
struct student{
    int id;//学号 
    string name;//名字 
    int age;//年龄 
    int grade;//班级    
}s;
void xitong(){
    cout<<"欢迎来到学生管理系统"<<endl;
    cout<<"请做出以下选择"<<endl;
    cout<<"1.新建学生信息"<<endl;
    cout<<"2.查找学生信息"<<endl;
    cout<<"3.修改学生信息"<<endl;
    cout<<"4.删除学生信息"<<endl;
    cout<<"5.退出系统"<<endl;
}
vector<student> insert(vector<student> a){
    cin>>s.name;
    cin>>s.age;
    cin>>s.grade;
} 
int main(){
    vector<student> a;
    xitong();
    int n;
    cin>>n;
    switch(n){
        case 1:
            
            break;
        case 2:
            break;
        case 3:
            break;
        case 4:
            break;
        case 5: 
            return 0;
            break;
    }
    return 0;
}