编程实现：把十进制数(long型)分别以二进制和十六进制形式输出，不能使用printf系列 1 template <typename T> 2 void displayHexBin(const T& v) 3 { 4 const unsigned char c2h[] = "0123456789ABCDEF"; 5 const unsigned char c2b[] = "01"; 6 7 unsigned char* p = (unsigned char*)&v; 8 char* buf = new char [sizeof