Syntax

  #include <ctype.h>  
   
  int islower  (  
     int   c);
  

Parameters

c

(IN) Specifies the character to be tested.

Return Values

islower returns a nonzero value when the argument is a lowercase character. Otherwise, a value of 0 is returned.

Remarks

The islower function or macro tests for any lowercase character (a to z) in the ASCII code set.

See Also

isalnum, isalpha, iscntrl, isdigit, isprint, ispunct, isspace, isupper, isxdigit, tolower, toupper