In C++ the programmer is responsible for correctly allocating and releasing memory resources. Logical errors in the program can cause memory leaks, i.e. previously allocated memory is not being properly released after usage. The following guideline shows how to minimize the risk of accidentically leaking memory.
The obviously easiest way to avoid memory leaks, is to not dynamically allocate memory at all (i.e. using new or even malloc). More often than it should be, objects are dynamically allocated with new. This habit probably was carried over by Java programmers into the world of C++. Most of the time, however, in C++ it is sufficient to directly create objects on the stack:
MyClass obj(arg1, arg2); // do this instead of MyClass *obj = new MyClass(arg1, arg2);