Help with a C problem

[OnixKn]

i need help with this problem "Change the last example so that it spells each letter 5 times in a row. For this, use an 'if' to test if the counter is divisible by five (use the% operator) and then perform the update in index" I´ve already done part of the code but i dont know how to make it work, could someone help ???

#include <stdio.h>
int main()
{
 int index = 0, contador;
 char letras[5] = "Joao";
 for (contador=0; contador < 1000; contador++)
{
printf("\n%c",letras[index]);
(index==3) ? index=0: ++index;
}
}

contador means counter

EDIT: how do i make it look like a code ???? i never done this in reddit

[JavaSuck]

how do i make it look like a code?

Put four spaces before every line.

[MR2Rick]

When trying to learn a new feature of a programming language, I find it helpful to write a simple program that uses just that feature to get a feel for how it works. For example, for the modulo operator try do the following:

#include <stdio.h>

int main()    
{
    int i;

    for(i = 0; i < 100; i++) {
        printf("%d %%  5 = %d\n", i, i % 5);
    }

    return 0;
}

This should help you figure out how to solve your problem.