结构体的基本使用

#include<bits/stdc++.h>
using namespace std;
struct who{
    string name;
    double grade;
    int age;
};
int main()
{
	who a;
    a.name = "张三";
    a.grade = 98.5;
    a.age = 12;
    cout<<a.name<<" "<<a.grade<<" "<<a.age;
	return 0;
}