C Reference Lower Case Letter Test: islower()

The islower() function returns a non-zero if its argument is a lowercase letter. If the argument is not a lowercase letter, then zero is returned.

islower() source code example:


#include<stdio.h>
#include<ctype.h>

int main()
{
	char a;

	scanf( "%c", &a );
	if( islower(a) )
		printf( "Is lower case: %c\n", a );
	else
		printf( "Is NOT lower case: %c\n", a );
	return 0;
}

This entry was posted in C Reference ctype.h Functions. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed. Tweet This! Tweet This! or use to share this post with others.

Comments are closed.