# Answer to Question #19226 in C++ for Bhagyashree Shete

Question #19226

int foo(int x, int n)

{

int val = 1;

if (n > 0)

{

if (n % 2 == 1)

val *= x;

val *= foo(x * x, n / 2);

}

return val;

}

What function of x and n is computed by foo?

· xn

· x * n

· nx

· None of the above

{

int val = 1;

if (n > 0)

{

if (n % 2 == 1)

val *= x;

val *= foo(x * x, n / 2);

}

return val;

}

What function of x and n is computed by foo?

· xn

· x * n

· nx

· None of the above

Expert's answer

#include<iostream>

using namespace std;

int foo(int x, int n)

{

int val = 1;

if (n > 0)

{

if (n % 2 == 1)

val *= x;

val *= foo(x * x, n / 2);

}

return val;

}

int main ()

{

cout << foo(2,3) << endl;

system ("pause");

return 0;

}

using namespace std;

int foo(int x, int n)

{

int val = 1;

if (n > 0)

{

if (n % 2 == 1)

val *= x;

val *= foo(x * x, n / 2);

}

return val;

}

int main ()

{

cout << foo(2,3) << endl;

system ("pause");

return 0;

}

**Answer**: None of the above
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