Question

S=2¹+2²+2³+...+2 la n
Cum se face algoritmul?

Answer 1

#include <iostream>
#include <math.h>

using namespace std;

int main()
{
int n, a[100], suma = 0;
cin >> n;
for(int i = 0; i < n; i++)
cin >> a[i];
suma = 0;
for(int i = 1; i <= n; i++)
suma += pow(2, i);
cout << suma;
return 0;
}