Geometric Sum

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#include <bits/stdc++.h>
using namespace std ;

float Gsum(int k){
    //base case
    if(k==0) return 1 ;

    //Recursive case
    double smallAns = Gsum(k-1);

    //Calculation
    return smallAns + 1.0/pow(2,k);


}

int main(){
    cout << Gsum(3);

    return 0 ;
}

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