Thread: character array - sentinel value

I'm fairly new to C programing and I've been working on developing a program that will allow the user to input in some word and output the word backwards. For example:

Input:
New York

Output:
korY weN

I'm having no trouble doing this, but I want the program to run on a loop and exit when the word "stop" is entered. Any suggestions?

Thanks!

Welcome to the forum, avolkmar!

String comparisons in C are done with the strcmp(string1, string2) function. Include the header file <string.h> to use it. The return from strcmp() works like this:

Value > 0 = strcmp(string1, string2) (string1 > string2)
Value < 0 = strcmp(string1, string2) (string1 < string2)
Value of 0 = strcmp(string1, string2) (string1 ==s tring2)

Just remember that the value returned will refer to string1, When string1 is greater, the value returned will be > 0, etc.

Code:

if(strcmp(string1,"stop")== 0) {
   break;   //break out of the current loop
}

Just tried it and it works great! Thanks for the help!