strcmp function >> string.h >> Compare two strings

strcmp function >> string.h >> Compare two strings

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What strcmp Actually Does ?

1. Function takes two Strings as parameter
   
2. It returns integer .
   

Syntax :

int strcmp ( char *s1, char *s2 ) ;

Return Type

Return Type	Condition
-ve Value	String1 < String2
+ve Value	String1 > String2
0 Value	String1 = String2

Live Example 1 : Two strings are Equal 

                char s1[10] = "SAM" , s2[10]="SAM" ;

                int len;

                len = strcmp (s1,s2);

                if (len == 0)

                       printf ( " Two Strings are Equal ");

Live Example 2 : String1 is Greater than String2

                char s1[10] = "SAM" , s2[10]="sam" ;

                int len;

                len = strcmp (s1,s2);

                printf ( "%d" , len );           // Output -ve

Reason  : 

1. ASCII value of "SAM" is smaller than "sam" 
2. ASCII value of 'S' is smaller than 's' 

Live Example 3 : String1 is Smaller than String1

                char s1[10] = "sam" , s2[10]="SAM" ;

                int len;

                len = strcmp (s1,s2);

                printf ( "%d" , len );           // Output +ve

Reason  : 

1. ASCII value of "SAM" is greater than "sam" 
2. ASCII value of 'S' is greater than 's'  

Note :

• This function is Case sensitive
• Header file  :  string.h
  

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Tags / Keywords : | strcmp, String OPeration, String.h

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