strcmp

Compares two ASCII character strings and returns a negative, 0, or positive integer, indicating that the ASCII values of the individual characters in the first string are less than, equal to, or greater than the values in the second string.

Format 

#include  <string.h>

int strcmp  (const char *str_1, const char
            *str_2);

Arguments

str_1, str_2
Pointers to character strings.

Description

The strings are compared until a null character is encountered or until the strings differ.

Return Values
< 0  Indicates that str_1 is less than str_2. 
= 0  Indicates that str_1 equals str_2. 
> 0  Indicates that str_1 is greater than str_2. 

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