#include using namespace std;template class _ischararray_;template class _ischararray_ { public: static bool _ischararray(){return true;}}; template class _ischararray_ { public: static bool _ischararray(){return false;}};template bool isCharArray(const T& x) { return _ischararray_ ::_ischararray();}int _tmain(int argc, _TCHAR* argv[]){ const char* s1 = "12345"; const char s2[] = "12345"; isCharArray("12345")?cout<<"char []"< <<"char*"<
或者下面这段我没有看懂的代码，麻烦大牛们帮忙解释一下下面的代码段：
#include using namespace std;namespace X{ template bool IsArray (T (&a)[SIZE]) { return true; } template bool IsArray (const T *&p) { return false; }}namespace Y{ typedef char (&yes)[2]; template yes IsArray (T (&a)[SIZE]); template char IsArray (const T *&p);}int _tmain(int argc, _TCHAR* argv[]){ char s1[] = "hello"; const char *s2 = "hello";#if 1 using namespace X; if(true == IsArray(s2)) throw 0; if(false == IsArray("12345")) throw 0; if(false == IsArray(s1)) throw 0;#else // 编译期间解决该问题 using namespace Y; if(sizeof(IsArray(s2)) == sizeof(yes)) throw 0; if(sizeof(IsArray(s1)) != sizeof(yes)) throw 0;#endif return 0;}