I wanna add two numbers in parameters.

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For example::
#include<iostream.h>
class ex
{
public:
ex()
{
a=0;
b=0;
}
ex(
..
...
}
};
void main()
{
ex e1(3,5), e2(5,7),e3;
e3=e1.add(e2);
}

The answer should be 8 q2..
The x of e1 should be added to x of e2....and y of e1 should be added to y of e2...
Thanks ... a s a p..

What I have tried:

I have tried but I didn't got it

Posted 14-Jun-18 8:59am

Member 13873155

Updated 14-Jun-18 21:43pm

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Jochen Arndt · Answer 1 · 2018-06-14T21:44:00

C++

e3=e1.add(e2);

Seeing this statement and knowing that all applies to the class ex, the function prototype must be

C++

ex add(const ex& e1) const;

and the corresponding implementation is

C++

ex ex::add(const ex& e1) const
{
    ex result;
    result.a = this->a + e1.a;
    result.b = this->b + e1.b;
    return result;
}

or shorter using the constructor (and to be placed in the class definition)

C++

ex add(const ex& e1) const
{
    return ex(this->a + e1.a, this->b + e1.b);
}