operator =

class Setuation 
{
public:
Setuation(int Rec=0) // конструктор
        {
        Receptors=Rec;
        m=new int [Receptors];
        for(int i=0;i<Receptors;i++)
                {
                m[i]=0;
                }
        }

...

Setuation & operator=(Setuation &Sn) // функция присваивания
{
if(this != &Sn)
        {
        delete [] m;
        Receptors=Sn.ItsLong();
        m=new int [Receptors];
        for(int i=0;i<Receptors;i++)
                {
                m[i]=Sn(i);
                }
        }
return *this;
}
private:
int Receptors;
int *m;
};

Setuation  InpFromBoard()
{
Setuation S(9);

...

return S;}

Setuation S(9);
S=InpFromBoard();

[C++ Error] IndXO.cpp(43): E2285 Could not find a match for 'Setuation::operator =(Setuation)'

S.operator =(InpFromBoard());

[C++ Warning] IndXO.cpp(58): W8030 Temporary used for parameter 'Sn' in call to 'Setuation::operator =(Setuation &)'

#include <iostream>

using namespace std;

class Setuation 
{
public:
Setuation(int Rec=0) // конструктор
{
        Receptors=Rec;
        m=new int [Receptors];
        for(int i=0;i<Receptors;i++)
                {
                m[i]=0;
                }
        }

Setuation & operator=(Setuation &Sn)
{
	this->Receptors = Sn.Receptors;
	cout<<"In operator ="<<endl;
	return *this;
}
int Receptors;
int *m;
int ItsLong()
{
	return 5;
}
};

Setuation  &InpFromBoard()
{
	Setuation *S = new Setuation(9);
	return *S;
}

 void main()
{
	Setuation S(5);
	cout<<"Before: "<<S.Receptors<<endl;
	S=InpFromBoard();
	cout<<"After: "<<S.Receptors<<endl;
	cin.get();
}

Setuation *S = new Setuation(9);

Setuation *pS=&S;
return *pS;

*S(i)=X

S[0](i)=O;

Setuation *S=new Setuation(9);

delete obj;

#include <iostream>

using namespace std;

class one
{
public:
	one()
	{
		cout<<"in constructor";
		s = (char*)malloc(3);
		strcpy(s, "hi");
	}
	~one()
	{
		cout<<"In destructor";
		free(s);
	}
	char* s;
	void hi()
	{
		cout<<s<<endl;
	}
};

one *func()
{
	one *n = new one();
	return n;
}

void main()
{
	one *n2 = func();
//вышли из функции
	n2->hi();
	delete n2;//деструктор вызовется только здесь.
	cin.get();
}

#include <stdio.h>
#include <conio.h>
class MyClass {
    int * n;
public:
    MyClass() { 
        n = new int[10];
    };
    ~MyClass() {
         printf("destructor called ");
        delete [] n;
    };
};
void f(MyClass c ) {

    printf("f called ");
};

int main() {

    MyClass c;
    f(c);
    return 0;
};