What is the difference between new/delete and malloc/free?

Question

Accepted Answer

**malloc/free:**
- C-style memory allocation
- Returns void*
- No constructor/destructor calls
- Manual size tracking

```c
int* p = (int*)malloc(sizeof(int) * 10);
free(p);
```

**new/delete:**
- C++ memory allocation
- Calls constructors/destructors
- Returns typed pointer
- Throws on failure (new)

```cpp
auto p = new int[10];
delete[] p;

auto obj = new MyClass(args);
delete obj;
```

**Best practice:**
- Never use raw new/delete
- Use `std::make_unique`/`std::make_shared`
- Use `std::vector` instead of new[]

C++: What is the difference between new/delete and malloc/free?