#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>

int doublemode = 0; // 0 = Int, 1 = Float
char usage[] = "usage: matrixgenerator size [-mode double]\n";
int i,j, k;
int matricewidth = 0;


int main (int argc, const char * argv[]) 
{ 
  // check Number of arguments
  if (argc != 2 && argc != 4)
  {
    printf("%s", usage);
    return 0;
  }
  
  // Check arguments for double mode
  if (argc == 4)
  {
    if (strcmp(argv[2],"-mode") != 0 || strcmp(argv[3],"double") != 0)
    {
      printf("%s", usage);
      return 0;
    }
    
    doublemode = 1;
  }
  
  matricewidth = atoi(argv[1]);
  
  srand ( time(NULL) );
  
  double number;
  
  // Float
  printf("%d\n", matricewidth);
  for (k = 0; k < 2; k++)
  {
    for (i = 0; i < matricewidth; i++)
    {
      for (j = 0; j < matricewidth; j++) 
      {
        if (doublemode)
        {
          number = (double) rand() / RAND_MAX;
          number = 200 * number - 100;
          printf("%g\n", number);
        }
        else
          printf("%d\n", ( rand() % 200 - 100));
      }
    }
  }
  
    return 0;
}