Code#85:C Program Change string to lower case without strlwr

#include<stdio.h>

void lower_string(char*);

main()
{
   char string[100];

   printf("Enter a string to convert it into lower case\n");
   gets(string);

   lower_string(string);

   printf("Entered string in lower case is \"%s\"\n", string);

   return 0;
}

void lower_string(char *string)
{
   while(*string)
   {
      if ( *string >= 'A' && *string <= 'Z' )
      {
         *string = *string + 32;
      }
      string++;
   }
}