Memory allocator in blocks of GB

Dockerfile

FROM scratch
ADD high-mem-allocator /
ENTRYPOINT ["/high-mem-allocator"]
CMD ["1"]

Makefile

build: 
	gcc -v -static   mem-allocator.c -o high-mem-allocator

mem-allocator.c

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

const int GB=1024*1024*1024;

int main(int argc, char *argv[]) {
	char* high_mem[12];
	if (argc<2) {
		printf("Allocates memory blocks in GB \nUSAGE: \n$ high-mem-allocator <Unit>\n");
		return 1;
	}
	int multiplier = atoi(argv[1]);
	
	for (int i=0; i<multiplier ;i++) {
		high_mem[i] = malloc(1*GB);
		if (high_mem[i] == NULL) {
			printf("Error while allocating memory\n");
			return 1;
		}
		memset(high_mem[i],'0',GB);
	}
	
	printf("Total memory allocated: %d GB\n\n", multiplier);

	printf("<Press Enter key to exit>");
	getchar();
	for (int i=0; i<multiplier ;i++) {
		free(high_mem[i]);
	}
	return 0;
}