GCD_Index_Ranges

#include <iostream>

using namespace std;

int GCD(int l,int r){
    while(r){
        return GCD(r,l%r);
    }
    return l;
}
int main()
{
    int arr[] = {2, 3, 60, 90, 50};
    int a=2;
    int b=4;
    int rsl=arr[a];
    for(int i=a+1;i<=b;i++){
        rsl=GCD(rsl,arr[i]);
    }
    cout<<"GCD Of given range "<<rsl;
    return 0;
}