c++中寻找一下错误

Question

#include<iostream>
#include<algorithm>
#include<cstdio>
using namespace std;
int main()
{
    int t,n,i,j;
    scanf("%d",&t);
    string f;
    string a[1005];
    while(t)
    {
        scanf("%d",&n);
        for(i=0;i<=n-1;i++)
        {
            cin>>a[i];
        }
        sort(a,a+n);
        f=a[n-1];
        for(j=n-2;j>=0;j--)
        {
            f=f+a[j];
        }
        cout<<f<<endl;
        t--;
    }
    
    return 0;
}

结果显示错误，请问哪里出错了

Answer 1

有帮助的话 采纳一下

#include <iostream>
#include <algorithm>
#include <string>

using namespace std;

int main() {
    int T;
    cin >> T;
    
    while (T--) {
        int N;
        cin >> N;
        
        string nums;
        for (int i = 0; i < N; i++) {
            int num;
            cin >> num;
            nums += to_string(num);
        }
        
        sort(nums.begin(), nums.end(), greater<char>());
        cout << nums << endl;
    }
}