islower - Test for lowercase letter

Definition	#include <ctype.h> int islower(c); islower checks whether the character c is a lowercase letter (a-z). c is the value of the character to be checked.
Return val.	!= 0 0	c is a lowercase letter. c is not a lowercase letter.
Note	islower is implemented both as a macro and as a function (see section “Functions and macros”).
Example	#include <ctype.h> #include <stdio.h> int main(void) { int c; while((c = getchar()) != EOF) printf("%s : %c\n", ((islower(c)) ? "Lowercase letter" : "Other"), c); return 0; }
See also	isalnum, isascii, iscntrl, isdigit, isgraph, isalpha, isprint, ispunct, isspace, isupper, isxdigit, isebcdic, iswlower