cpp/math/gcd_of_array.cpp at master · romi2002/cpp · GitHub

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// C++ program to find GCD of an array of integers
//Author Bharat Reddy

#include<bits/stdc++.h>
usingnamespacestd;

intgcd(int a, int b)
{
if (a == 0)
return b;
returngcd(b % a, a);
}


intfindGCD(int arr[], int n)
{
int result = arr[0];
for (int i = 1; i < n; i++)
 result = gcd(arr[i], result);

return result;
}

intmain()
{
int n;
 cout<<"Enter size of array : ";
 cin>>n;
int a[n];
 cout<<"Enter elements of array"<<endl;
int i;
for(i=0;i<n;i++)
 cin>>a[i];
 cout << findGCD(a, n) << endl;
return0;
}