Syntax

#include <string.h>
char *strlwr(char *string);

strlwr converts any uppercase letters in the given null-terminated string to lowercase. Other characters are not affected.

strlwr returns a pointer to the converted string. There is no error return.

This example makes a copy in all lowercase of the string "General Assembly", and then prints the copy.

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

int main(void)
{
   char *string = "General Assembly";
   char *copy;

   copy = strlwr(strdup(string));
   printf("Expected result: general assembly\n");
   printf("strlwr returned: %s\n", copy);
   return 0;

   /****************************************************************************
      The output should be:

      Expected result: general assembly
      strlwr returned: general assembly
   ****************************************************************************/
}

• strupr
  
• toascii - _tolower - _toupper
  
• tolower - toupper
  
• towlower - towupper

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