// file: lecture_12/example.cc
//

// local include files
//
#include "example.h"

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

  // declare a character string
  //
  char str[] = "Alex";

  fprintf(stdout, "str = %s\n", str);
  fprintf(stdout, "str[0] = %c (%d)\n", str[0], str[0]);
  fprintf(stdout, "str[1] = %c (%d)\n", str[1], str[1]);
  fprintf(stdout, "str[2] = %c (%d)\n", str[2], str[2]);
  fprintf(stdout, "str[3] = %c (%d)\n", str[3], str[3]);

  long N = 3;
  float x[N];
  x[0] = 1.0;
  x[1] = 2.0;
  x[2] = 3.0;

  //  float x[] = {1, 2, 3};

  fprintf(stdout, "x[0] = %f (%f)\n", x[0], x[0]);
  fprintf(stdout, "x[1] = %f (%f)\n", x[1], x[1]);
  fprintf(stdout, "x[2] = %f (%f)\n", x[2], x[2]);
  //  fprintf(stdout, "x[3] = %f (%f)\n", x[3], x[3]);

  float z[2][9][27][99][35];
  z[0][0][0][0][0] = 0.0;
  z[0][0][0][0][1] = 27.0;
  z[0][0][0][0][34] = 99.0;

  fprintf(stdout, "---- pointers ----\n");
  float joe = 27.0;
  float* ptr = &joe;
  fprintf(stdout, "joe = %f\n", joe);
  fprintf(stdout, "the memory location for joe is %p (%u)\n", ptr, ptr);
  fprintf(stdout, "*joe = %f\n", *ptr);

  *ptr = (float)35.0;
  fprintf(stdout, "*joe = %f\n", *ptr);
  // fprintf(stdout, "joe = %f\n", joe);
  
  float* y = (float*)z;
  fprintf(stdout, "y[0] = %f\n", y[0]);
  fprintf(stdout, "y[1] = %f\n", y[1]);
  fprintf(stdout, "y[34] = %f\n", y[34]);

  x[0] = y[3] * (z[0][0][0][0][1]);
  //  x[0] = y[3] * (z[1]);

  /*
  float* zzz = x;
  fprintf(stdout, "x[0] = %f (%f)\n", *zzz, x[0]);
  fprintf(stdout, "x[1] = %f (%f)\n", *(zzz+1), x[1]);
  fprintf(stdout, "x[2] = %f (%f)\n", *(zzz+2), x[2]);

  char* mystr = ((char*)z) + 1;
  fprintf(stdout, "z[0] second byte is %u (%c)\n", *mystr, *mystr);
  
  //  void* huh = (void*)z;
  */

  /*
  float* ppp = zzz;
  fprintf(stdout, "x[0] = %f (%f)\n", *ppp, x[0]);
  ppp++;
  fprintf(stdout, "x[1] = %f (%f)\n", *ppp, x[1]);
  ppp++;
  fprintf(stdout, "x[2] = %f (%f)\n", *ppp, x[2]);
  */

  fprintf(stdout, "=====\n");
  fprintf(stdout, "argv = %u\n", argv);
  fprintf(stdout, "argv[0] = %s (%u)\n", argv[0], argv[0]);
  fprintf(stdout, "argv[1] = %s (%u)\n", argv[1], argv[1]);
  fprintf(stdout, "argv[2] = %s (%u)\n", argv[2], argv[2]);

  fprintf(stdout, "=====\n");
  fprintf(stdout, "argv[0] = %s\n", argv[0]);
  fprintf(stdout, "argv[0][0] = %c\n", argv[0][0]);
  fprintf(stdout, "argv[0][1] = %c\n", argv[0][1]);

  double sum;
  double *sum;
  double* mysum = ∑
	     
  /*
  float* bob;
  long M = atoi(argv[1]);
  bob = new float[M];
  bob[0] = 35.0;
  bob[1] = 99.0;
  fprintf(stdout, "bob[1] = (%u) %f\n", &bob[1], bob[1]);

  bool status = myfunct(bob, M);
*/
    
  // exit gracefully
  //
  exit(0);
}

/*
bool myfunct(float* x, long M) {
  fprintf(stdout, "...%f (%d)\n", x[0], M);
  return true;
}
*/