MFC中调用Console窗口

第一种方法：

void InitConsoleWindow()

{
int nCrt = 0;
FILE* fp;
AllocConsole();
nCrt = _open_osfhandle((long)GetStdHandle(STD_OUTPUT_HANDLE), _O_TEXT);
fp = _fdopen(nCrt, "w");
*stdout = *fp;
setvbuf(stdout, NULL, _IONBF, 0);

}

第二种方法

AllocConsole();freopen("CONIN$","r", stdin);

freopen("CONOUT$","w", stdout);

freopen("CONOUT$","w", stderr);

作用：方便直接的输出程序运行信息。