C++位運算符
試試下麵的例子就明白了所有的C++提供的位運算符。
複製下麵的C++程序並粘貼到test.cpp 文件編譯並運行此程序。
#include <iostream> using namespace std; main() { unsigned int a = 60; // 60 = 0011 1100 unsigned int b = 13; // 13 = 0000 1101 int c = 0; c = a & b; // 12 = 0000 1100 cout << "Line 1 - Value of c is : " << c << endl ; c = a | b; // 61 = 0011 1101 cout << "Line 2 - Value of c is: " << c << endl ; c = a ^ b; // 49 = 0011 0001 cout << "Line 3 - Value of c is: " << c << endl ; c = ~a; // -61 = 1100 0011 cout << "Line 4 - Value of c is: " << c << endl ; c = a << 2; // 240 = 1111 0000 cout << "Line 5 - Value of c is: " << c << endl ; c = a >> 2; // 15 = 0000 1111 cout << "Line 6 - Value of c is: " << c << endl ; return 0; }
讓我們編譯和運行上麵的程序,這將產生以下結果:
Line 1 - Value of c is : 12 Line 2 - Value of c is: 61 Line 3 - Value of c is: 49 Line 4 - Value of c is: -61 Line 5 - Value of c is: 240 Line 6 - Value of c is: 15