A21637.生日 题解

结构体排序

#include<bits/stdc++.h>
using namespace std;
struct student{
	string name;
    int id,year,month,day;
}stu[105];
bool cmp(student x,student y){
    if (x.year!=y.year) return x.year<y.year;
    if (x.month!=y.month) return x.month<y.month;
    if (x.day!=y.day) return x.day<y.day;
    return x.id>y.id;
}
int n;
int main()
{
	cin>>n;
	for (int i=1;i<=n;i++){
		cin>>stu[i].name>>stu[i].year>>stu[i].month>>stu[i].day;
        stu[i].id=i;
	}
	sort(stu****tu+1+n,cmp);
    for (int i=1;i<=n;i++) cout<<stu[i].name<<endl;
	return 0;
}