Char repeat in c

Question

Input = hello
Output = hhheeellllllooo
Can someone explain me the logic as to how to implement it.

Answer 1

#include <stdio.h>
#include<string.h>

int main()
{
char b[100];
int i, a;
scanf("%d",&a);

scanf("%s",b);

for(i=0;i<a;i++)
{
printf("%c",b[i]);
printf("%c",b[i]);
printf("%c",b[i]);
}

return 0;
}

This is the code and it works perfectly 𝐊𝐢𝐢𝐛𝐨 𝐆𝐡𝐚𝐲𝐚𝐥
Thanks

Answer 2

𝐊𝐢𝐢𝐛𝐨 𝐆𝐡𝐚𝐲𝐚𝐥 What if a number is not given (in this case 3)?
What if the repeat rate is to be initialized at runtime?

Answer 3

𝐊𝐢𝐢𝐛𝐨 𝐆𝐡𝐚𝐲𝐚𝐥 Means using nested for loop right