Syntax

#include <string.h>
int strcmp(const char *string1, const char *string2);

strcmp compares the strings pointed to by string1 and string2. The function operates on null-terminated strings. The string arguments to the function should contain a null character (\0) marking the end of the string.

strcmp returns a value indicating the relationship between the two strings, as follows: compact break=fit.

Value

Meaning
Less than 0
string1 less than string2
0
string1 identical to string2
Greater than 0
string1 greater than string2.

This example compares the two strings passed to main using strcmp.

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

int main(int argc,char **argv)
{
   int result;

   if (argc != 3) {
      printf("Usage: %s string1 string2\n", argv[0]);
   }
   else {
      result = strcmp(argv[1], argv[2]);
      if (0 == result)
         printf("\"%s\" is identical to \"%s\"\n", argv[1], argv[2]);
      else
         if (result < 0)
            printf("\"%s\" is less than \"%s\"\n", argv[1], argv[2]);
         else
            printf("\"%s\" is greater than \"%s\"\n", argv[1], argv[2]);
   }
   return 0;

   /****************************************************************************
      If the following arguments are passed to this program:

      "is this first?" "is this before that one?"

      The output should be:

      "is this first?" is greater than "is this before that one?"
   ****************************************************************************/
}

• strcmpi
  
• strcoll
  
• strcspn
  
• stricmp
  
• strncmp
  
• strnicmp
  
• wcscmp
  
• wcsncmp

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