// file: lecture_07/example.cc
//

// system include files
//
#include <stdio.h>
#include <stdlib.h>
#include <math.h>

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

  // declare some variables
  //
  FILE* fp = fopen(argv[1], "r");

  if (fp = (FILE*)NULL) {
    fprintf(stdout, "<%s> error on file (%s)\n", argv[0], argv[1]);
    return(-1);
  }

  if (argc < MIN_ARGS) {
    fprintf(stdout, "<%s> insufficient arguments (%d)\n", argv[0], argc);
    return(-1);
  }    


  // do a loop
  //
  for (long i = 0; i < MAX_LEN; i++) {
    fprintf(stdout, "%d: hello\n", i);
  }

  long i = 0;
  while (i < MAX_LEN) {
    fprintf(stdout, "%d: hello\n", i);
    i++;
  }

  if (i != j) {
    fprintf(stdout, "%d: hello\n", i);
  }
  else if (k == m) {
    fprintf(stdout, "%d: hello\n", i);
  }
  else {
    fprintf(stdout, "%d: hello\n", i);
  }


  // exit gracefully
  //
  return(0);
}