#include <stdio.h>
#include <stdlib.h>

int main() {
	int *base = malloc(20);
	short c;
	for(c=0; c<20; c++) {
		base[c] = 0;
	}
	short values[6] = {94, 72, 103, 36, 38, 102};
	for(c=0;c<=(sizeof(values) /sizeof(short));c++) {
		// supports numbers under 1000
		short unitval = values[c] % 10;
		if (*(base  + (unitval * 4) + 2)) {
			//memory address free
			*(base + (unitval * 4) + 2) = values[c];
		}
		else {
			//isn't free checks flag and then moves through
			if (*(short *)(base + (unitval * 4))) {
				//flag set (overwriting)
				*(short *)(base + (unitval * 4)) = values[c];
			}
			else {
				short c1;
			}
		}
	}
	return 0;
}