Hey, all! I'm new to C programming and programming in general, and I am having trouble with a code that I can't get to work.

They want me to produce the following pattern:

F
FE
FED
FEDC
FEDCB
FEDCBA

This is my code so far:

Code:
#include <stdio.h>
void pattern(void)
{
    const int ROWS = 0;
    const int CHARS = 6;
    int row;
    char ch;
    
    for (row = 7; row > ROWS; row--)
    {
        for (ch = ('F' - row);  ch > ('F' - CHARS); ch--)
            printf("%c", ch);
        printf("\n");
    }
}
It is producing the following pattern:

A
BA
CBA
DCBA
EDCBA

No matter how much I've been tinkering around with it, I cannot get it to produce the desired result. Could I have some help? Thank you!