Thread: Help with Nested For Loop

Use a loop inside a loop to create the following pattern:

ABCDE
ABCD
ABC
AB
A

This is what I got, I got the answer by trial and error and still don't understand how this works. Can anyone help explain How these nested for loops work, what statements control what (row/column). Or if there's another answer possible.

Thanks in advance.

Code:

#include <stdio.h>
int main(void)

{

    const int ROWS = 5;
    const int CHARS = 5;
    int row;
    char ch;

    for (row = 0; row < ROWS; row++)
    {
        for (ch = ('F' - CHARS);  ch < ('F' - row); ch++)

            printf("%c", ch);

        printf("\n");

    }

    return 0;

}