// isalpha example 
// source: http://www.cplusplus.com/

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

int main()
{
  int i=0;
  char str[]="c++ is based on c";
  while (str[i])
    {
      if (isalpha(str[i])) 
	printf("character %c is alphabetic\n",str[i]);
      else 
	printf ("character %c is not alphabetic\n",str[i]);
      i++;
    }
  return EXIT_SUCCESS;
}