Reprinted-evaluate a number and convert it to the number of 1 in binary

Source: Internet
Author: User

Reprinted from: returns the number of 1 in binary to a number in binary.

// Count1 -- 01.cpp: defines the entry point of the console application. // # Include "stdafx. H "# include <iostream> using namespace STD; int coutn1 (INT num) {int result = 0; while (Num) {result + = num & 0x01; // if the value is 1, the total number is 1. If the value is 0, the value is + 0. In this way, we can know that the number of 1 in binary is num> = 1 ;} return result;} int coutn102 (INT num) // The beauty of programming the good method described above {int result = 0; while (Num) {num & = (num-1 ); result ++;} return result;} int _ tmain (INT argc, _ tchar * argv []) {cout <coutn1 (10000) <Endl; cout <coutn1 (10000) <Endl; System ("pause"); Return 0 ;}

 

Reprinted-evaluate a number and convert it to the number of 1 in binary

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