Write a C++ program example of creating global and local object

Explain the scope resolution operator with an example.

Explain how the objects can be passed in pass reference method.

Write the output of the following program.
#include < iostream >
using namespcae std;
class simple
{
private:
int a,b;
public:
simple(int m, int n)
{
a=m;
b=n;
cout << "\nParameterized Constructor of classsimple" << endl;
}
void putdata( )
{
cout << "\nThe two integers are ..." << a <<"\t << b << endl;
cout << "\nThe sum of the variables " << a << " + " << b << "=" << a+b;
}
};
int main( )
{
simple s1(10,20),s2(30,45);//Created two objects with different values created
cout << "\n\t\tObject 1\n";
s 1.putdata( );
cout << "\n\t\tObject 2\n";
s2.putdata( );
return 0;
}

What are the ways to create an object using parameterized constructor with an example?