Create arrraygcd.cpp

arrraygcd.cpp

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+
+// C++ program to find GCD of two or 
+// more numbers 
+#include <bits/stdc++.h> 
+using namespace std; 
+
+// Function to return gcd of a and b 
+int gcd(int a, int b) 
+{ 
+    if (a == 0) 
+        return b; 
+    return gcd(b % a, a); 
+} 
+
+// Function to find gcd of array of 
+// numbers 
+int findGCD(int arr[], int n) 
+{ 
+    int result = arr[0]; 
+    for (int i = 1; i < n; i++) 
+        result = gcd(arr[i], result); 
+
+    return result; 
+} 
+
+// Driver code 
+int main() 
+{ 
+    int arr[] = { 2, 4, 6, 8, 16 }; 
+    int n = sizeof(arr) / sizeof(arr[0]); 
+    cout << findGCD(arr, n) << endl; 
+    return 0; 
+}