C++ 无法填充数据

Question

我正在尝试用 x 和 y 值填充我的 vector 。但它似乎没有添加，只是覆盖了第一的。

主要.cpp

#include <iostream> 
#include "Point.h"

using namespace std;
int x,y;
Point point;
string options;
void someMethods();
int main()
{   
    cout << "Please Enter x-Cordinate"<< endl;
    cin >> x;
    cout << "Please Enter y-Cordinate" << endl;
    cin >> y;
    cout << "Enter cords again? yes/no"<< endl;
    cin >> options;
    while (options == "yes") {

        cout << "Please Enter x-Cordinate"<< endl;
        cin >> x;
        cout << "Please Enter y-Cordinate" << endl;
        cin >> y;
        cout << "Enter cords again? yes/no"<< endl;
        cin >> options;
    }


    if(options == "no") {
        Point Point(x,y);
        Point.someMethods();
       // break;
    }
}

点.h

#ifndef Point_Point_h
#define Point_Point_h
#include <vector>

class Point {
private:
      int x,y;

public : 

      Point() {
       x = 0;
       y = 0;
      } //default consrructor


      Point(int x,int y);
      int getX();
      int getY();
      void setX(int x);
      void setY(int y);
      std::vector<Point> storeData;
      void someMethods();

};    

#endif

点.cpp

#include <iostream>
#include "Point.h"
using namespace std;


Point::Point(int x,int y) {
setX(x);
setY(y);

}  

int Point::getX() {
  return x;
}
int Point::getY() {
  return y;
}

void Point::setX(int x) {
this->x = x;
}

void Point::setY(int y) {
this->y = y;
}


void Point::someMethods() {
x = getX();
y = getY();

Point Point(x,y);
storeData.push_back(Point);

   for (int i=0; i<storeData.size(); i++) {
    cout << "X "<< storeData[i].getX() <<"Y " << storeData[i].getY() << endl;
   }
// do some methods here after getting the x and y cords;
}  

我怎样才能做到这一点，例如(我输入 x 和 y 3 次，比方说 1,1 2,2 3,3 )

然后会输出

X: 1,Y: 1
X: 2,Y: 2
X: 3,Y: 3

Answer 1

int main()
{
    // don't need global variables, just define local ones here
    int x,y;
    Point point;
    string options;

    // You shouldn't store the vector of Points in the Point class itself.
    // It doesn't have anything to do with a Point. classes should generally
    // only contain relevant information (ex. Point contains only x and y coords).
    vector<Point> pointsVector;

    // do-while will do the contents of the loop at least once
    // it will stop when the while condition is no longer met
    do
    {
        cout << "Please Enter x-Cordinate"<< endl;
        cin >> x;
        cout << "Please Enter y-Cordinate" << endl;
        cin >> y;

        pointsVector.push_back(Point(x, y));

        cout << "Enter cords again? yes/no"<< endl;
        cin >> options;
    } while (options == "yes")

    // don't really need to check if options is "no"
    // if you have exited the do/while loop above, the assumption is that you don't 
    // want to enter more coordinates.
    doSomethingWithTheVectorOfPoints(pointsVector);

    return 0;
}

在函数doSomethingWithTheVectorOfPoints 中，您可以放置​​用于输出X 和Y 坐标的代码。 (您也可以直接在主函数中循环遍历 vector 。)

此外，您可以向 Point 类添加一个名为 ToString 或 Print 的成员函数来为您完成这项工作。

编辑:我实际上并没有编译它，它只是让您了解如何重写代码。