Strcmp() string handling functions

C-Strcmp() function   

It refers to string comparison function.

           

The general format of strcmp() function is:

            Syntax:           strcmp(string1 , string2);

            Function is used to compare the given two strings. 

                                   

            Function performs comparison between two strings character by character until there is a mismatch or end of the strings is reached, whichever occurs first.  If the two strings are identical, function returns 0 value.  If they are not identical, function returns numerical difference between the ASCII values of the first non-matching characters.

#include <stdio.h> 
#include <conio.h> 
#include <string.h> 
void main () 
{ 
    char s1[20],s2[20]; 
     int c;
    puts(“Enter String1”); 
    gets(s1);
    puts(“Enter String2”); 
    gets(s2); 
    c=strcmp(s1, s2);
    if (c = = 0) 
    printf (“String are equal);
    else
    printf("String are Not equal");
}