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

extern unsigned char *asma(unsigned char *s);

unsigned char *asma_ref(unsigned char *s)
{
	int i;
	for (i=0; i<16; i++) {
		unsigned char c = s[i];
		c += (c >= 'A' && c <= 'Z') ? 'a'-'A' : 0;
		s[i] = c;
	}
	return s;
}

int main(int argc, char **argv) {
	char *input1[]={"asdfABCDEFGHKL54", "foofuuMUHkk", "AbC"};
	char *output1;
	char *output2;
	char *input2;
	char *input3;
	int i;

	for(i = 0; i < 3; i++) {
		input2 = strdup(input1[i]);
		input3 = strdup(input1[i]);
		output1 = (unsigned char*) asma_ref((unsigned char *)(input2));
		output2 = (unsigned char*) asma((unsigned char *)(input3));

		output1[16]='\0';
		output2[16]='\0';

		if(memcmp(output1,output2, 16)) {
			printf("Testfall falsch; erwartet:\n\t\"%s\"\ntatsaechliches Ergebnis:\n\t\"%s\"\n", output1, output2);
		} else {
			printf("Testfall \"%s\" passt.\n", output1);
		}
		printf("\n");

		free(input2);
		free(input3);
	}

	return 0;
}