Using the new operator with an object's non-default constructor

Question

Would something like:

classname* p = new classname(parameter1, parameter2, ...); 

create a pointer that points to an object initialized using a non-default constructor with signature: classname(parameter1, parameter2, ...) ?

Thanks!

Answer 1

对，那是正确的。

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Answer 2

我自己不能放得更好-记住要在完成后删除它，除非您想让堆不开心！

Answer 3

Yes, it will. This program illustrates the concept.

#include <string>
#include <iostream>

class Foo
{
private:
    std::string name;
public:
    Foo() : name("default"){}
    Foo(std::string Name): name(Name) {}

    void Print() { std::cout << name << std::endl; }
};

int main ()
{
    Foo* foo = new Foo();
    foo->Print();
    delete foo;

    foo = new Foo("special");
    foo->Print();
    delete foo;
}

The output is:

default
special

Answer 4

Yes it does. but may I know how did the question came to your mind? you got some errors?