C++ 控制台彩色输出（windows）

简单程序的彩色输出能给出快速的信息，比如：红色代表错误，绿色代表通过

 

 

/* * Title： * C++ colorful output begins * * Usage： * std::cout<<green<<"hello, world./n"; */#include <iostream>#include <windows.h>// The following three functions make the console// colorful outputinline std::ostream& blue(std::ostream &s){ HANDLE hStdout = GetStdHandle(STD_OUTPUT_HANDLE); SetConsoleTextAttribute(hStdout, FOREGROUND_BLUE |FOREGROUND_GREEN|FOREGROUND_INTENSITY); return s;}inline std::ostream& red(std::ostream &s){ HANDLE hStdout = GetStdHandle(STD_OUTPUT_HANDLE); SetConsoleTextAttribute(hStdout, FOREGROUND_RED|FOREGROUND_INTENSITY); return s;}inline std::ostream& green(std::ostream &s){ HANDLE hStdout = GetStdHandle(STD_OUTPUT_HANDLE); SetConsoleTextAttribute(hStdout, FOREGROUND_GREEN|FOREGROUND_INTENSITY); return s;}

 

 

关于green、red、blue的函数调用，流的一个simple trick，以函数指针为参数的operator overloading：

// The output operator for class ostream is basically overloaded like thisostream& ostream::operator<<(ostream& (*op)(ostream& )){ //call the function passed as parameter with this stream as the argument return (*op)(*this);}// For instance, a simplified endl(), may like thisstd::ostream& std::endl(std::ostream& os){ os.put('/n'); os.flush(); return os;}

 

 

 

 

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