MonteCarloPI.c

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


/* I had a trouble before because type double is cant no store
enough significant figures for these types of problems
in couple weeks you can find this code more improved in my github repo:
https://github.com/sufuk/NumericalMethods

 Semih Ufuk Güler
 200011674
 EEE #2
 sufukguler@gmail.com
  */

int main(){

  double x;
  double y;
  double hits = 0;
  double hitsinside = 0;
  double pi;
  double t;
  int i;
  srand(time(NULL));

  for(i = 0 ; i < 1000000 ; i++){

    hits++;

    x = (double)rand() / RAND_MAX;
    y = (double)rand() / RAND_MAX;
    t = sqrt(pow(x, 2) + pow(y, 2));

    if(t < 1){

    hitsinside += 1;

    }
  }

  pi = 4 * (hitsinside / hits);

  printf("PI is numerically calculated: %lf\n\n", pi);
  printf("Semih Ufuk Guler\n200011674\nEEE #2\nsufukguler@gmail.com\n");
  int a;
  scanf("%d", &a);
  //Scanf unrelated to actually it just there for becaese when you run program program its immediately shuts down without it.

return 0;
}