C++别名传参和指针传参区别

#include <iostream>#include <string>using namespace std;void print1(string &a){cout<< a <<endl;}void print2(string *a){cout<< *a <<endl;}int _tmain(int argc, _TCHAR* argv[]){string a = "hello world";string *p = new string("string ptr");print1(a);print1(*p);print2(&a);print2(p);return 0;}