#include <bits/stdc++.h>
using namespace std;
int n;
int main()
{
    cin >> n;
    for (int i = 1; i <= n; i++)
    {
        cout << n;
    }
    return 0;
}

data = input()
a = data * int(data)
print(a)

🚀️ for循环

#include<iostream>
using namespace std;
int main()
{
    int n;
    cin>>n;
    for(int i = 1;i<=n;i++)
    {
        cout<<n;
    }
    return 0;
}

既然有人用for了，那我用while写一下

#include <bits/stdc++.h>
using namespace std;
int n;
int main()
{
    cin>>n;
    int m=n;
    while(m>0)
    {
        cout<<n;
        m--;
    }
    return 0;
}

#include<iostream>
using namespace std;
int main()
{
    int n;
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cout<<n;
    }
    return 0;
}