CODEWITHSUNDEEP
c++
skip_to_my_lou
skip_to_my_lou

Reputation: 1

Conversion from 'int' to non-scalar type 'Point" requested

I have to create a program where a chutist jumps from a plane. The user inputs the altitude and the time when the chutist will open its parachute. I haven't finished all my code, just wanted to know if it can run before I go any further but I always get this error (Conversion from 'int' to non-scalar type 'Point" requested). We are also using the Hortsmann libraries which I am very new to. Anyone knows what this error means and what can I do to fix any error of this kind? If you don't understand my question, please tell me. Here is the code: #include "ccc_win.h" #include 

using namespace std; 

class Chutist{
public:
 Chutist(); 
 Chutist(Point loc); //constructor where chutist always points up
 void display (int i, int s) const; //accessor function, displays chutist
 void move (int dx, int dy); // mutator function, moves chutist
private:
 Point jumpman;
 Point location; // location of chutist
};

//default

Chutist::Chutist(){
   location = Point (0, 0);
}

//construction of Chutist object at Point loc;

Chutist::Chutist(Point loc){
    jumpman = loc;
}

void Chutist::display(int i, int s) const{
  if (s < i){
     Point top = (jumpman.get_x(), jumpman.get_y());
     Circle c = (top, 10);
     cwin << c;
 }
}

void Chutist::move(int x, int dy){
}



int ccc_win_main(){
   cwin.coord(0, 2000, 2000, 0);
   int loc;
   int altitude = 0;
   int secondstoopen = 0;
   int velocity = 0;
   cout << "Please enter the altitude to jump at." << endl;
   cin  >> altitude;
   cout << "Please enter the time to open the parachute." << endl;
   cin  >> secondstoopen;
   Chutist jumper = Chutist(Point(0, altitude));
   jumper.display(secondstoopen);
}

Upvotes: 0

Views: 2476

Answers (2)

skip_to_my_lou
skip_to_my_lou

Reputation: 1

For future references, it was because of the equal sign on the following code:

[Point top = (jumpman.get_x(), jumpman.get_y());
 Circle c = (top, 10);]

I guess since we are creating the point and the circle we aren't supposed to use an equal sign.

Upvotes: 0

iksemyonov
iksemyonov

Reputation: 4196

The error occurs in the lines

 Point top = (jumpman.get_x(), jumpman.get_y());
 Circle c = (top, 10);

where you intend to create instances of Point and Circle. Which we don't have the corresponding headers, by common sense it's safe to assume that those classes have ctor's that take obvious parameters (int, int) and (Point, int). So, the correct way to create an object of a class is either this

Point top(jumpman.get_x(), jumpman.get_y());
Circle c(top, 10);

or

Point top = Point(jumpman.get_x(), jumpman.get_y());
Circle c = Circle(top, 10);

which would results in calls to the appropriate constructors.

Your code results in the following. The expression (jumpman.get_x(), jumpman.get_y()) evaluates to the rightmost jumpman.get_t_y(), that's how the comma operator works. Thus, the compiler concludes that you want to construct a Point from a single int, which is impossible, since there (obviously) is no such constructor or conversion operator. Same for the second line, with different constructor parameters.

Upvotes: 1

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