/*Using various string-handling functions*/

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

#define N 100

int main()
{
	char *s1, *s2; //declare two strings

	s1 = malloc(N); //sizeof(char)=1 for all machines
	s2 = malloc(N);
	if (!s1 || !s2){
		printf("Out of memory!\n");
		return 1;
	}

	printf("Please enter s1 and s2:\n");
//	gets(s1); 
//	gets(s2);
scanf("%s", s1);
scanf("%s", s2);
	puts(s1);
	puts(s2);

	printf("Length of s1 and s2: %d %d\n", strlen(s1), strlen(s2));
	
	printf("Comparing s1 and s2: ");
	if (!strcmp(s1, s2))
		printf("They are equal\n");
	else printf("They are NOT equal\n");

	printf("Concatenating s2 onto the end of s1: ");
	strcat(s1, s2);
	printf("s1 = %s\n", s1);

	printf("Copying another string to s1: ");
	strcpy(s1, "This is a test.\n");
	printf("s1 = %s", s1);

	if (strchr(s1, 'e')) printf("e is in s1\n");
	if (strstr(s1, "test")) printf("found test in s1\n");

	free(s1); //release allocated memory
	free(s2);

	return 0;
}