析构函数在创建后立即删除数组成员？

Question

所以如果我不做自己的析构函数，我的代码运行正常。根据调试器和监视器（我可能不会正确使用它们），它会立即删除对象数组的成员。代码的目的是用矩形（宽度，高度，颜色）填充数组，然后在用户选择颜色后按降序（按表面积）打印出信息。此外，我的没有参数的构造函数与重载的运算符+（它应该通过添加它们的宽度和高度添加两个矩形）冲突。同样，代码编译并且在没有析构函数的情况下工作得很好，没有没有参数的构造函数（＆＃34;禁用＆＃34;在下面的代码中）。

#include <iostream>
#include <string.h>

using namespace std;

class rectangle
{
private:
    float width;
    float height;
    char *colour;
public:
//  rectangle(){width=0;height=0;colour=0;}
    rectangle(float, float, char *);
//  ~rectangle();
    float reWidth(){return width;}
    float reHeight(){return height;}
    char * reColour(){return colour;}
    void changeWid(float a){width=a;}
    void ChangeHei(float b){height=b;}
    float area();
    rectangle largerArea(rectangle);
    void printInfo();
    void showColour(rectangle *, int, char *);
    friend rectangle operator+(rectangle,rectangle);
    static float totalArea;
 };

 float rectangle::totalArea=0;

 rectangle::rectangle(float a=0, float b=0, char *c=""):width(a),height(b)
 {
     colour=new char[strlen(c)];
     strcpy(colour,c);
     totalArea+=area();
 }  

 /*rectangle::~rectangle()
   {
     delete colour;
     colour=0;
   }*/

 float rectangle::area()
 {
    return width*height;
 }

 rectangle rectangle::largerArea(rectangle a)
 {
    if(a.area()>area())
    return a;
    else if(a.area()<area())
    return *this;
    else return a.width>=width?a:*this;
 }

 void rectangle::printInfo()
 {
    cout<<width<<" x "<<height<<" - "<<colour<<endl;
 }

 rectangle operator+(rectangle a, rectangle b)
 {
    rectangle temp;
    if((a.width && b.width && a.height && b.height) !=0)
 {
    temp.width=a.width+b.width;
    temp.height=a.height+b.height;
 }
    else if(b.height==0)
    {
       temp.width=a.width+b.width;
       temp.height=a.height+b.width;
    }
    else if(a.height==0)
    {
       temp.width=a.width+b.width;
       temp.height=a.width+b.height;
    }
    return temp;
    }

 void rectangle::showColour(rectangle* arrayr, int n, char* col)
 {
    int i,j;
    rectangle temp;
    for (i = 0; i < n; ++i)
    {
       for (j = i + 1; j < n; ++j)
       {
          if (arrayr[i].area() > arrayr[j].area())
          {
              temp =  arrayr[i];
              arrayr[i] = arrayr[j];
              arrayr[j] = temp;
          }
       }
    }

    for(int i=0;i<n;i++)
        if(strcmp(col,arrayr[i].colour)==0)
            arrayr[i].printInfo();
  }

  int main()
  {
    float a,b;
    char c[20];
    cout<<"Insert info for rectangle A: ";
    cin>>a>>b>>c;
    rectangle A(a,b,c);
    cout<<"A=";A.printInfo();

    cout<<"Insert info for rectangle B: ";
    cin>>a>>b>>c;
    rectangle B(a,b,c);
    cout<<"B=";B.printInfo();

    cout<<"A+B=";(A+B).printInfo();
    cout<<"A+3=";(A+3).printInfo();
    cout<<"3+A=";(3+A).printInfo();

    int n;
    cout<<"Array length? : ";
    cin>>n;
    rectangle arrayr[n];
    for(int i=0;i<n;i++)
    {
       cout<<"Insert info for "<<i+1<<"-th rectangle: ";
       cin>>a>>b>>c;
       arrayr[i]=rectangle(a,b,c);
    }
    char colour[20];
    cout<<"Choose colour: ";
    cin>>colour;
    arrayr[1].showColour(arrayr,n,coulour);

    cout<<"Total area of created rectangles is: "<<rectangle::totalArea;
   }