isalpha Function

It tests the given character, whether it is an alphabet (A to Z or a to z)

It returns nonzero if ch is a letter or zero if not.

Syntax :

int isalpha(int ch);

Example


#include <ctype.h>

#include <stdio.h>

  void main() {

	char ch='a';

	if(isalpha(ch)) {

		printf("%c is a letter\n", ch);

	}

}

Output