add binomial_coefficient

src/funktion.c

@@ -253,3 +253,15 @@ double probability_from_tree(double successful_outcomes, double total_outcomes,
     result = successful_outcomes / (total_outcomes * branches);
     return result;
 }
+int binomial_coefficient(int n, int k) {
+
+    int result = 1;
+    if (k > n - k) {
+        k = n - k;
+    }
+    for (int i = 0; i < k; ++i) {
+        result = result * (n - i) / (i + 1);
+    }
+    printf("The binomial coefficient C(%d, %d) is %d\n", n, k, result);
+    return result;
+}

src/funktion.h

@@ -42,5 +42,6 @@ float Vskalort(float x1, float x2, float x3, float z1, float z2, float z3);
 double Vangle(float x1, float x2, float x3, float z1, float z2, float z3);
 float vPunkt(float x1, float x2, float x3, float z1, float z2, float z3, float p1, float p2, float p3);
 double probability_from_tree(double successful_outcomes, double total_outcomes, double branches);
+int binomial_coefficient(int n, int k);
 
 #endif

src/main.c

@@ -200,4 +200,9 @@ int main()
     y = getValue('T');
     z = getValue('B');
     probability_from_tree(x, y, z);
+
+    printf("Enter a and b to calculate the binomial coefficient: ");
+    a = getValue('a');
+    b = getValue('b')
+    binomial_coefficient(a, b);
 }