no suitable constructor exists to convert from "test *" to "test", constructor,

Question

I'm new to c++ and I'm having difficulties with constructor and classes. So, here is my header file:

#pragma once
#include <string>
using namespace std;
class test
{

    private:
    string name;
    int number;

public:

    test();
    test(string i,int b);
};

This is cpp file:

#include "test.h"
#include <string>
using namespace std;


test::test(){}

test::test(string i,int b){
    this->name=i;
    this->number=b;
}

now, when I try to call

test t=new test("rrr",8);

I get:

1   IntelliSense: no suitable constructor exists to convert from "test *" to "test" 

So, whats the thing with classes having * in their name ( for instance, classes without .cpp file don't have asterix, all others do)? And what do I do wrong?

Answer 1

I imagine you're coming from a Java/C# background. t is not a reference type here, it's a value type. new returns a pointer to an object. So you need any of the following:

test t = test("rrr", 8);
test t("rrr", 8);
test *t = new test("rrr", 8);

If you're not yet familiar with pointers, then definitely don't use the last one! But understanding the semantics of pointers is fairly critical; I recommend reading the relevant chapter(s) in your textbook...