在C ++中使用getter和setter函数创建具有X和Y轴的类Point

We have two declare a point class with two Axis X and Y and we have to create/design its getter and setter functions.

我们有两个声明带有两个Axis X和Y的点类，并且我们必须创建/设计其getter和setter函数。

As we know that a class has some data members and number functions. So, here we are going to declare two private data members X and Y of integer types. X will be used for the X-axis and Y will be used for the Y-axis.

众所周知，一个类具有一些数据成员和数字函数。因此，在这里我们将声明两个整数类型的私有数据成员X和Y。 X将用于X轴， Y将用于Y轴。

Now, let's understand what are getter and setter member functions?

现在，让我们了解什么是getter和setter成员函数 ？

Setter functions are those functions which are used to set/assign the values to the variables (class's data members). Here, in the given class, the setter function is setPoint() - it will take the value of X and Y from the main() function and assign it to the private data members X and Y.

设置器函数是用于将值设置/分配给变量(类的数据成员)的那些函数。在此，在给定的类中，setter函数为setPoint() －它将从main()函数中获取X和Y的值并将其分配给私有数据成员X和Y。

Getter functions are those functions which are used to get the values. Here, getX() and getY() are the getter function and they are returning the values of private members X and y respectively.

Getter函数是用于获取值的那些函数。在这里， getX()和getY()是getter函数，它们分别返回私有成员X和y的值。

Program:

程序：

#include <iostream>
using namespace std;
// claas declaration
class point
{
private:
int X, Y;
public:
//defualt constructor 
point () {X=0; Y=0;}
//setter function
void setPoint(int a, int b)
{
X = a;
Y = b;
}
//getter functions
int getX(void) 
{
return X;
} 
int getY(void)
{
return Y;
}
};
//Main function
int main ()
{
//object 
point p1, p2;
//set points
p1.setPoint(5, 10);
p2.setPoint(50,100);
//get points 
cout<<"p1: "<<p1.getX () <<" , "<<p1.getY () <<endl;
cout<<"p1: "<<p2.getX () <<" , "<<p2.getY () <<endl;
return 0;
}

Output

输出量