CS256 - Principles of Structured Design Fall 2021

Displaying ./code/cs256su21code/jul06/strcmp.c

/*

demonstrating strcmp

strcmp is a function that compares two strings

int rt = strcmp(str1, str2);

if rt < 0, then str1 is "less" than str2
if rt == 0, then str1 is the same as str2
if rt > 0, then str1 is "greater" than str2

In this context, when we say "less" and "greater", we mean the ascii values of the
non-matching characters of the two strings.

*/


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

int main(int argc, char *argv[]){

	if(argc < 2){
		printf("Usage: %s something\n", argv[0]);
		exit(1);
	}

	if(strcmp(argv[1], "dog") == 0){
		printf("you entered the word dog\n");
	} else {
		printf("you did not enter the word dog\n");
	}

	return 0;

}