/*
 * digitcounter
 * Selftest Problem4
 * Chapter 6
 * John Stile
 * Purpose: Write a program named digitcounter.c
 *   that reads from input and determins the
 *   number of digits in the input, and
 *   outputs the result.
 */
#include <stdio.h>

int main(void) // header for function main 
{
  int digits=1; // declare and initialize int variable digits

  while( (getchar() != EOF ) ) // get character from stdin 
                               // until we reach end of file.
  {
    digits=digits+1;  // add 1 to the digit counter.
  } // run while expression again
  
  // Loop has ended, we have counted all chars input.
  
  printf("The number of digits input: %d\n", digits); // print result

  return 0; // return 0 to calling program
}