Q 1 write pograme in c++ for passbyvalue/passbyrefrence/passbyaddress .

#include<iostream>
using namespace std;

class passvalue
{

public:
    void passbyvalue(int x, int y); //pass by value
    void passbyrefrence(int &x, int &y);//pass by refrence.
    void passbyaddress(int *x, int *y); //pass by address.

};
void passvalue::passbyvalue(int x, int y)
{

x=10;
y=20;

}

//actual value will be changed .
void passvalue::passbyrefrence(int &x, int &y)
{
//passbyrefence :

cout<<"passbyrefrence called"<<endl;

x=60;
y=50;

}


//actual value will be changed .
void passvalue::passbyaddress(int *x, int *y)
{

cout<<"passbyaddress is  called"<<endl;
*x=70;
*y=80;

}

int main()
{
int i=40,j=30;
passvalue B;

cout<<"actual value"<<endl;
cout<<i<<endl<<j<<endl;

B.passbyvalue(i,j);

cout<<"passbyvalue called"<<endl;
cout<<i<<endl<<j<<endl;

cout<<"passbyrefrence  called"<<endl;

B.passbyrefrence(i,j);

cout<<i<<endl<<j<<endl;

cout<<"after pasaddress called"<<endl;
B.passbyaddress(&i,&j);
cout<<i<<endl<<j<<endl;

return 0;

}

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