// file: my first program
//
#include <stdio.h>
#include <math.h>

// my main program starts here
//
int main(int argc, char** argv) {

  float sum = 0.0;
  for (long i = 0; i < 3; i++) {
    sum += 1.0;
  }
  fprintf(stdout, "the value of sum is: %f\n", sum);

  // exit gracefully
  //
  return 0;
}