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

// string_compare_guy compares the contents of the left hand side, length with the contents of the
// right hand side, length and returns 1 if the right hand side (needle) is inside the left hand
// side (haystack).
static int string_compare_guy(char* lhs, int llength, char* rhs, int rlength) {
	char lnz[llength + 1];
	memcpy(lnz, lhs, llength);
	lnz[llength] = 0;

	char rnz[rlength + 1];
	memcpy(rnz, rhs, rlength);
	rnz[rlength] = 0;

	char *result = strstr(lnz, rhs);

	return result == NULL ? 0 : 1;
}

int main() {
	int retcode = 0;

	printf("Comparing foo and bar\n");
	if(string_compare_guy("foo", 3, "bar", 3)) {
		retcode++;
		printf("failure\n");
	} else {
		printf("passed\n");
	}

	printf("trying to find foobar in foo\n");
	if(string_compare_guy("foo", 3, "foobar", 6)) {
		retcode++;
		printf("failure\n");
	} else {
		printf("passed\n");
	}

	printf("trying to find foo in foobar\n");
	if(string_compare_guy("foobar", 3, "foo", 6)) {
		printf("passed\n");
	} else {
		retcode++;
		printf("failure\n");
	}

	return retcode;
}