#!/usr/bin/env cscript
#include <stdio.h>
#include <string.h>

int
main(int argc, char *argv[]) {
	char column_index[3 + 1];

	column_index = "A";
	while (column_index[strlen(column_index) - 1] < 'Z') {
		column_index[strlen(column_index) - 1] += 1;
	}
	
}