c++ - Will this result in a memory leak? -

my c++ pretty rusty started using hobby project got "level up"-again..

#include "stdafx.h" #include "stdlib.h"  class { public:     void call() { printf("call called\n"); } };  class b { public:     b() { this->pointer = new a; }     void call() { this->pointer->call(); } private:     a* pointer; };  int _tmain(int argc, _tchar* argv[]) {     b t;     t.call();      system("pause");     return 0; } 

will result in memory leak? , how can delete pointers if program decides not need them anymore?

would "delete t" enough or produces memory leak too?

pointer in b allocated never deleted. you'll want define destructor b deletes a, otherwise leak a pointed pointer every time b goes out of scope:

b::~b() {     delete pointer; }