need help with constructor

Code:

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//core unit test
//given 2 constructors

vector v1;
vector v2 (5,3);

//member functions :    int dotProduct(const Vector &x)

int n = v1.dotProduct(v2)

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from the test core const Vector &x = v2
so in order to use it in my dotproduct function i can simply use
x.somefunct which refer to v2. but how can i access v1.let say if what i intend to do is

Code:

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if (v1.somefunc != v2.somefunc){
...........;
}

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should i copy both constructor? or save it in different memory?

thanks in advance

v1 is this object in the method. You can just refer to the member's name, or put this-> in front of it:

Code:

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    somefunct();
    //or
    this->somefunct();

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so,is this right?
im assuming what you are trying to say is this can be any object which in this case is v1 and x is v2 .

Code:

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if (this->somefunct != x->somefunct){
....}

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thanks