无语死了

lucy2012 @ 2024-05-08 21:10:12

#include<bits/stdc++.h>
using namespace std;
int n;
struct stu{
    string s;
    int num,y,m,d;
}a[110];
int cmp(stu a,stu b){
    if(a.y!=b.y)
        return a.y<b.y;
    if(a.m!=b.m)
        return a.m<b.m;
    if(a.d!=b.d)
        return a.d<b.d;
    return a.num<b.num;
}
int main(){
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i].s>>a[i].y>>a[i].m>>a[i].d;
        a[i].num=i;
    }
    sort(a+1,a+1+n);
    for(int i=1;i<=n;i++)
        cout<<a[i].s<<endl;
    return 0;
}

by zhangqiuyanAFOon2024 @ 2024-05-08 21:12:33

sort(a+1,a+1+n,cmp);

by GXZJQ @ 2024-05-08 21:13:02

@lucy2012 你好，很高兴能帮到你。

关于自定义排序函数返回值需要是 bool 型。

by NC20061226 @ 2024-05-08 21:13:08

@lucy2012

sort(a+1,a+1+n);

要加cmp，你这都没有注意到，应该改成

sort(a+1,a+1+n,cmp);

by CTGU_23_sxy @ 2024-05-08 21:13:40

sort这里加上cmp就好了 @lucy2012 ```cpp sort(a + 1, a + n + 1, cmp);

by CTGU_23_sxy @ 2024-05-08 21:14:01

sort(a + 1, a + n + 1, cmp);

by NC20061226 @ 2024-05-08 21:14:11

还有cmp要bool类型

by lucy2012 @ 2024-05-08 21:16:13

@NC20061226 @zhangqiuyan2023 好吧，是我有点逆天蒟蒻的基因在的QwQ学了几个月还是老犯这种问题怪不得我数学老是粗心错，谢谢啦！用的是bool但84分

by CTGU_23_sxy @ 2024-05-08 21:17:35

@lucy2012 int 可以的，cmp中是a.num > b.num

by CTGU_23_sxy @ 2024-05-08 21:19:10

不过最好还是写成bool

by lucy2012 @ 2024-05-08 21:19:10

@CTGU_23_sxy

• 输入靠后的同学先输出

找到了，谢谢啦！QwQ我眼睛聋了