c++ when using functions function call missing argument [closed] - c++

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void Circle::getXYr() {
cout << "(x,y,R) = (" << x << "," << y << "," << r << ")" << endl;
}
double Circle::circArea() {
return (r * r * PI);
}
double Circle::circPeri() {
return (2 * r * PI);
}
void Circle::printCircle() {
cout << "Printing circle " << getXYr << endl;
cout << "Circle Area: " << circArea << endl;
cout << "Circle Perimeter: " << circPeri << endl;
}
I cant use the printCircle function: ERROR Error 1 error C3867: 'Circle::getXYr': function call missing argument list; use '&Circle::getXYr' to create a pointer to member
also the same for the next 2 functions.

Answer 1

It are functions, you have to call them as such. Note the brackets ()
cout << "Printing circle " << this->getXYr() << endl;
cout << "Circle Area: " << this->circArea() << endl;
cout << "Circle Perimeter: " << this->circPeri() << endl;
this-> is not explicitly needed.
Your second error is due this->getXYr() does not return a value. It returns void. There is no basic_ostream overload for it.
You either should put the logic of the getXYr() into the printCircle() function. Or call that function without calling cout on it:
cout << "Printing circle ";
this->getXYr();
cout << "Circle Area: " << this->circArea() << endl;
cout << "Circle Perimeter: " << this->circPeri() << endl;