Change return value

monte_carlo should return a double, printing code should be in main

Author: Gorzoid

contents/monte_carlo_integration/code/c/monte_carlo.c

@@ -8,7 +8,7 @@ bool in_circle(double x, double y, double radius) {
     return x * x + y * y < radius * radius;
 }
 
-void monte_carlo(int samples) {
+double monte_carlo(int samples) {
     double radius = 1.0;
     int count = 0;
 
@@ -21,10 +21,7 @@ void monte_carlo(int samples) {
         }
     }
 
-    double estimate = 4.0 * count / (samples * radius * radius);
-
-    printf("The estimate of pi is %f\n", estimate);
-    printf("Percentage error: %0.2f%\n", 100 * fabs(M_PI - estimate) / M_PI);
+    return 4.0 * count / samples;
 }
 
 int main() {