One of the C + + algorithm sentences infers that an integer is not a 2 integer

Idea: An integer is assumed to be 2 of the whole number of squares, then its binary representation has only one is 1, and all the other bits are 0. Subtract this integer from the integer minus 1 and then proceed with the operation. So this whole number is one of the only

1 becomes 0, and this integer becomes 0;

Code:

Is2.cpp: Defines the entry point of the console application. #include "stdafx.h" #include <iostream>using namespace Std;bool is2 (int n) {return! (n& (n-1));} int _tmain (int argc, _tchar* argv[]) {bool b = IS2 (2); Cout<<b<<endl;bool C = Is2 (3); Cout<<c<<endl ; GetChar (); return 0;}

One of the C + + algorithm sentences infers that an integer is not a 2 integer