Program to calculate GCD of n numbers.

CODE in C/Mathematical/GCD_Of_n_numbers.cpp

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+//This is a program to find GCD of n numbers.
+
+#include <bits/stdc++.h>
+using namespace std;
+
+//Writing the code for calculating GCD of two numbers.
+int hcf(int a, int b){
+if(a>b){
+  if(b==0){return a;}
+  else{return hcf(b,a%b);}
+}else{
+  if(a==0){return b;}
+  else{return hcf(a,b%a);}
+}
+}
+
+int main() {
+int n,i,x,g;
+cout<<"GCD of how many numbers do you want to find ?\n";
+cin>>n;
+vector<int> a;
+cout<<"Enter the numbers now:\n";
+//Taking in the values for calculating GCD.
+for(i=0;i<n;i++){
+    cin>>x;
+    a.push_back(x);
+}
+//Calculating the GCD.
+g = a[0];
+for(i=1;i<n;i++){
+    g = hcf(a[i],g);
+}
+//Printing out the result.
+cout<<"The GCD of the given numbers is "<<g;
+return 0;
+}