How to repeat a letter in a word n ​times?

How to repeat a letter in a word n ​​times??
for example:
input: 10

Woooooooooow!

This is my code

#include <stdio.h>


int main() {
    int entrance = 1;
    printf("Entry by you: ");
    scanf("%d", &entrance);

    printf("W");
    for (int i = 1; i <= entrance; i++){
        printf("%c",'o');
    }
    printf("w!\n");
    return 0;

}

>Solution :

If you know how to do that you should use strings