两种解法，cstdio 和 std ：

#include <cstdio>
int main() {
    char ch;
    scanf("%s", &ch);
    printf("  %s  \n %s%s%s \n%s%s%s%s%s\n", &ch, &ch, &ch, &ch, &ch, &ch, &ch, &ch, &ch);
    return 0;
}

#include <bits/stdc++.h>
using namespace std;
int main() {
    char ch;
    cin >> ch;
    cout << "  " << ch << "  " << endl;
    cout << " " << ch << ch << ch << " " << endl;
    cout << ch << ch << ch << ch << ch << endl;
    return 0;
}