有点忘记strcmp函数了

return ( strcmp(a.name, b.name)<0 )? true : false;
记忆

#include<bits/stdc++.h>
using namespace std;

int n;
struct node
{
    int num;
    char name[15];
    int age;
};

bool cmp( node a , node b)
{
    if( a.age!=b.age )
    {
        return a.age<b.age;
    }
    else
    {
        if( a.num!=b.num )
        {
            return a.num<b.num;
        }
        else
        {
            //有点不记得了 
            return ( strcmp(a.name, b.name)<0 )?  true : false;
        } 
    }

}

int main()
{

    while( ~scanf("%d",&n) )
    {
        vector<node> solve;
        int loop=n;
        while( n-- )
        {
            node temp;
            scanf("%d %s %d",&temp.num, temp.name, &temp.age);
            solve.push_back(temp);
        }

        sort(solve.begin(), solve.end(), cmp );

        loop=min( loop, 3);
        for(int i=0; i<loop; ++i)
        {
            printf("%d %s %d\n", solve[i].num, solve[i].name, solve[i].age);
        }

    }


    return 0;
}