title: C - Monte Carlo Integration - Randoms not random and count not counting?
body: <p>Heads up, I'm a bit of a C newbie :P</p>
  
  <p>I'm trying to figure out why my program isn't running as intended. </p>
  
  <p>First, it's supposed return an x and y value within the range 0.0 to 10.0, which it does, but shouldn't randoms reset after each run? I'm getting the same X and Y values every time I run the program. </p>
  
  <p>Second, my loop doesn't seem to be doing anything. The count isn't increasing at all and I have no clue why - I'm assuming this is fixed, I should start seeing some correct results.</p>
  
  <pre><code>#include &lt;stdio.h&gt;
  #include &lt;stdlib.h&gt;
  
  void throwDart(double *x, double *y)
  {
      double min = 0.0, max = 10.0;
  
      *x = (max - min) * ((double)rand() / (RAND_MAX)) + min; //don't nec. need min - example format
      *y = (max - min) * ((double)rand() / (RAND_MAX)) + min; //^same
  }
  
  double Fun(double x)
  {
      return ((0.3*x*x) - (0.2*x) - 5); //estimate value of definite integral using this function
  }
  
  int main()
  {
      double x, y, P; //(x,y) is location, P is number of darts that hit below the curve/total thrown
      int N, e; //N is number of darts, e is area under curve
      int c = 0; //initialize count of darts that hit below the curve
  
      throwDart(&amp;x, &amp;y);
  
      printf("How many darts would you like to throw?\n");
      scanf("%d", &amp;N);
  
      for (int i = 0; i &lt; N; i++)
      {
          if (y &lt;= Fun(x))        
          c++;    
      }
  
      P = c/N;
      e = 100.00 * P;
  
      //most of the following prints just to see what is and isn't working
      printf("X is %lf\n", x);
      printf("Y is %lf\n", y);
      printf("N is %d\n", N);
      printf("c is %d\n", c);
      printf("P is %d\n", P);
      printf("Area under the curve is %d\n", e);
  
      system("Pause");
  
  }
  </code></pre>