c++ new/delete operator

gistfile2.txt

$ ./overload
>> Person
>> operator new
>> Person
>> ~Person
>> operator delete
>> ~Person

overload.cc

#include <iostream>
#include <cstdlib>
#include <cstdio>

using namespace std;

class Person {
    public:
    string name;

    void* operator new(size_t n) {
        printf(">> operator new\n");
        void *ptr = malloc(n);
        if (!ptr) throw "OutOfMemoryError: cannot allocate memory";
        return ptr;
    }

    void operator delete(void* ptr) {
        printf(">> operator delete\n");
        if (ptr) free(ptr);
    }

    Person(string s) {
        printf(">> Person\n");
        name = s;
    }

    ~Person() {
        printf(">> ~Person\n");
    }
};

int main() {
    // stack
    Person p1("james");

    // heap
    Person *p2 = new Person("jimmy");
    delete p2;
}