knr/1.7.c

    #include <stdio.h>

   /* count characters in input; 2nd version */
   int main()
   {
	long int blank=0;
	long int nl=0;
	long int tab=0;
	char c=(char)1;
	
	while( c != EOF )
	  {
	    c = getchar();
	    if (c==' ')
		 blank++;
	    if (c=='\t')
		 tab++;
	    if (c=='\n')
		 nl++;
	  }
	printf("spaces: %ld tabs: %ld lines: %ld ",blank, tab, nl);
	return (0);
   }