strcmp.c

/* This program compares two given strings.
 * I tried to make this program attractive as much as I can :)
 * Sadly but no interesting story behind this program :(
 * Maybe I'm feeling very reluctant to type :P
 */

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

int main(int argc, char *argv[])
{
	char str1[1000], str2[1000];
	printf("\n----------------------\n");
	printf("  STRING COMPARISON");
	printf("\n----------------------\n");
	printf("\nString-1: "); scanf("%s", str1);
	printf("String-2: "); scanf("%s", str2);
	// if two strings are unequal
	if (strcmp(str1, str2)) {
		// if the number of letters in the two strings are equal
		if (strlen(str1) == strlen(str2)) {
			printf("\nThere are %zu characters in both the string.\n", strlen(str1));
			printf("\n -----    -----");
			printf("\n STR-1    STR-2");
			printf("\n -----    -----");
			for (int i = 0; i < strlen(str1); i++) {
				if (str1[i] == str2[i])
					printf("\n  '%c'  =   '%c'", str1[i], str2[i]);
				else
					printf("\n  '%c' !=   '%c'", str1[i], str2[i]);
			}
		// if the number of letters in the two strings are unequal
		} else {
			printf("\nThere are %zu characters in String-1,", strlen(str1));
			printf("\nand %zu characters in String-2.", strlen(str2));
		}
		printf("\n\nStrings are not equal\n\n");
	// if the two strings are equal
	} else {
		// if the number of letters in the two strings are equal
		if (strlen(str1) == strlen(str2)) {
			printf("\nThere are %zu characters in both the string.\n",
			 strlen(str1));
			printf("\n -----    -----");
			printf("\n STR-1    STR-2");
			printf("\n -----    -----");
			for (int i = 0; i < strlen(str1); i++)
				printf("\n  '%c'  =   '%c'", str1[i], str2[i]);
		// if the number of letters in the two strings are unequal
		} else {
			printf("\nThere are %zu characters in String-1,", strlen(str1));
			printf("\nand %zu characters in String-2.", strlen(str2));
		}
		printf("\n\nStrings are equal\n\n");
	}
	return 0;
}