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Write class shape with width and height following a constructor that gives value to them.
Then define two sub-classes triangle and rectangle.
Those sub-classes can calculate the area of the shape area().
You need to follow the main() below. Please complete the program.

int main (){

    Rectangle rect;
    Triangle tri;
    rect.set_data (5,3);
    tri.set_data (2,5);
    cout << rect.area() << ";" << tri.area() << endl;
    return 0;
}

 

[Exercise] Coding (C) - asked in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited

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#include * * *** ** * *



using namespace std;



class shape  {
* * *** ***
* * ** ** ** *** * * ** ** * ***** set_data(int x, int y)
* * * ***** ** ****** * ** *
***** ** * * * * * *** ** ** * * **** ** ** ** ** = x;
** *** ** *** * * * ***** * * *** * **** ** * * = y;
** * * * * ** * *** ** * * * *


* * ** * ** * * * *** *
* ***** ** * * ** * * ** ** * ** width;
* ** * ** * * * * ** * * height;

};



class Rectangle: public shape {
* **** ** * * * * *
* ** **** * ** ** * ** ** * * * ** * area() {
* **** ** * ** ** * ** ** **** ** * * ** (width * height);
*** *** * * ** * ***** * ** * * ***

};



class Triangle: public shape {
* * * **** ** * *
* **** * ********** ** ** * ****** * area() {
**** **** * * * * * * * ** * *** * **** ******* * * ** * (width * height / 2);
* ** * *** * * ** * * *** *** * *

};



int main(void) {
* * * *** * **** ** * * rect;
** * ** * *** ***** * tri;


* ** * * * ** * *** 3);
* * * ** * * ***** * * 5);


* * * *** * * *** ** * ** rect.area() *** * ** ** * *** *** ** ** * * tri.area() * *** ** endl;


* *** ******* ** 0;

}
answered by (126 points)
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Hidden content!
#include *** * * ***



using * std;



class Shape

{
*
* * * * * * *** width, height;

public:
* ** ***** ** ** ** *** ** set_data (float a, float b)
* *** * * * ***** *
** ** * * * * *** * * ******* ** * * * * * = a;
** *** * *** * * *** *** ***** ** ** * ******* * * = b;
**** * *** ** **** * *

};



class ** * public Shape

{

public:
** **** * * * ** * * * area ()
** ** ** * ** *** * ***
**** ** ***** ** * * * ** *** * ** *** ** * ** ** * (width * height);
* ** * * * * *** **

};



class * ** public Shape

{

* **** * * * ** ** * *** *** area ()
*** * ** ** ** *** *****
*** * ** ** * ** * ******* * *** ** **** * ** * (width * height / 2);
** ** * ******* ** ** *

};



int main (){
* ** * * * ** * * *
* * ** ** **** * * * *** * rect;
**** *** * * * * ** ** tri;
*** * ** *** * * ***** (5,3);
** ** * * ** * * * * ******* (2,5);
*** ** ** * ** * **** **** * ** ** ** * ** ** * *** ** * * * ** ***** * * * ** ** * *** endl;
* *** * ** * ***** 0;

}
answered by (-215 points)
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Hidden content!
#include * * * ** **



using * *** std;



class Shape

{
** **
** ** * * * ** * * * width, height;

public:
*** ** * * * * * ****** * ** set_data (float a, float b)
****** * * ***** *
* ****** ***** ** * ** *** ** ** * * * = a;
* ** * **** * *** * * * ** *** * * ** ** ** * = b;
* * * * * * * ** * **

};



class * public Shape

{

public:
* **** ** * **** * * area ()
* * * *** ** * ****
* * *** * ** ***** * ** * * ** * * *** (width * height);
* * * * ** * ** * *

};



class *** * public Shape

{
**
** * * ** * * ***** ** * area ()
* **** ***** ** * **** **** * *
*** **** ** * * * * * ***** ****** * * * ** (width * height / 2);
* *** * *** *********

};



int main (){
** ******* * ***
* * * ** ** * * * ** * * ** rect;
* ** * * * ** * * **** * * tri;
* * ** ** * ****** (5,3);
***** * * ** * * **** * ** * (2,5);
* ** * * * * * * * *** ** ** **** * * * ** ** * *** * **** ** * * ** * * * endl;
** * * * * ****** ** ** 0;

}
answered by (-298 points)
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Hidden content!
#include * ** **** **



using * **** std;



class Shape

{
**
** * ** ** * * * ** ** ** * width, height;

public:
** * ** * *** **** * * set_data (float a, float b)
* ** * * * * *****
* ** ** * ** ** * * ** * * * *** *** * = a;
** * * **** *** * ** ******* *** ** * * ** ** * = b;
* * * ** * ** * *

};



class *** * * public Shape

{

public:
* ** * * *** ** * ** ** area ()
* * * ** ** **** * *
* ** * **** ** **** ** *** ** * *** *** (width * height);
* **** * * * *

};



class *** public Shape

{
*
* * ****** ** * * ** ** * area ()
* ** * ** * **** *
*** * * ** **** ** * ** ** * ***** * ***** * (width * height / 2);
** ******* * * ** ******* *

};



int main (){
* ***** * * * * **** * *
* ***** ****** * ** ***** rect;
** *** * * ** ** *** ** *** * * tri;
** * * **** *** *** * ** **** ** (5,3);
* ** * *** ** *** ** *** (2,5);
* ** * * *** ***** ** * **** * ** * **** * * * * * * ***** * * * * * endl;
**** * * ** ** *** **** ** ** 0;

}
answered by (237 points)
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Hidden content!
* * ** ** ** * * ***

using ** * std;



class **
**** ** *** **** *** * *
* ** * * * * ** * * width;
* * * * * * * ** ** height;
** * ** ** * * * * * * ** *** * ** ***** height);
* * * * **** ** ** *** * area();

};



class * ***
* * * * ** ***** **
* ** *** **** ** * width;
** ** * ** * **** ***** *** height;
* * * * * ** ** * ** ** ** ** * height);
* * ** * *** * * area();

};



void * :: **** *** * swidth ,float * * **
* * *** ****** * = swidth;
*** ** * *** **** ***** * = * *

}



float * *** :: area(){
* * * *** **** ** * * * * * * **** * * **** *** (width * * *

}



void ** ** :: **** * swidth ,float ***
* ** * ** **** * * = swidth;
** ******* *** * * = *** *

}



float Triangle :: area(){
* * **** * *** ** ** * ** **** ** * * * * * ** * ((width * **** **

}



int main (){
* * * * *** ******* * * rect;
**** * * * * *** * tri;
* * * * **** *** * ** * *** ** (5,3);
** ** ** *** * *** * ** **** * (2,5);
** ** ** ** ****** *** * * * * *** *** ** * * * * * * * * ***** * ** * * * ** * endl;
* *** *** * ** *** 0;

}
answered by (-136 points)
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Hidden content!
** * * * **

using std;



class * *
**** ** **** * * * *** *** **
**** *** *** * * ** * *** width;
**** ****** * * * * height;
** *** ** * * ** ** * * ** * ** *** height);
**** * ****** * * area();

};



class *
** **** * * * * ***** **
* ** * * * width;
**** ** **** * ** * * * height;
* * ***** * *** * ** *** * **** ** ** *
*** *** ** *** * ** * * * area();

};



void ** * :: ** * swidth ,float * ** *
** ***** ** = swidth;
* ** ****** ** *** * * = sheight;

}



float * :: area(){
* ** **** * * * * * * * **** * * *** ** *** * (width * * **

}



void ** :: ** **** swidth ,float *
* **** ** *** * * *** = swidth;
* ** ***** *** *** * *** = sheight;

}



float Triangle :: area(){
** *** ** * ** * *** * ** ** * * *** * *



int main (){
****** * *** ** **** ** rect;
* *** * *** * * * ** ** * tri;
* * ** * *** * * ** ****** *** * * (5,3);
* **** **** * *** * * *** (2,5);
* ** ** ** * *** ** * ** ** * ** **** ** ** ** ** * * ** * * *** * *** * * * endl;
*** ** ** * * ** 0;

}
answered by (-136 points)
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Hidden content!
** ** * **** ** ** * **
** * * ****



using namespace std;



class Rectangle{

public:
** * * * * ** * set_data(int H, int W){
*** * *** ** ** *** ** * * * ** = W;
* * *** ** ** * ***** * * ******* ** ** ** ** *** *** = H;
* * * * ** ** * **** * *
* * ***** ** *** * ** ** area(){
* * * * *** ** ********* *** * *** * * *** ** * * ** *
* ** ** * * * *



private:
* * **** * * ** ** * * r_width;
* * * * * ** ** * * * *** r_height;



};



class Triangle{

public:
* ** * ** ** ** ** * * set_data(int H, int W){
** * ** **** * * * * ** *** ** * *** * = W;
* ** * * * ** **** ** ** * * * ** ** * * ** = H;
*** * * ** ** ** ** *
** * ** *** ******* * * area(){
** * * *** * * **** * **** *** * * ** **** *** * * * ** * *
** ** * * * ** *

private:
* * * *** * ** t_width;
* *** ** * * ** *** **** t_height;

};



int main()

{
* ** * * *** *** ** * rect;
* * * * *** * * *** *** * tri;
** ** * * * *** (5,3);
** ** * * * ** * * *** * ** * (2,5);
* *** *** ** *** ** * * * * * ** * rect.area() **** * *** ** * << tri.area() << endl;
* ** ***** ** ***** 0;

}
answered by (-368 points)
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Hidden content!
***** *** * *****



using * * * std;



class ** * * {
* * * * ** * ** ***** width, * ***
** * *** * *
* * *** * *** *** ** *** * * * ** ***
**** * ** * ** * * area() * * * *** *

};



void ****** * (int x, int y) {
** * ** ** = x;
* **** ** ** ***** = y;

}



class * * {
* * * * ** ** * **** * * base,
* * * * ***
**** *** ***** *** * * * **** * **
* * *** **** * *** ** area() {return *** ** *

};



void ** * (int x, int y) {
* * * * * * * * * = x;
* * *** ** ** * = y;

}



int main (){


** *** * **** * * *** * ** * rect;
* * ** *** * **** * ** * tri;
* ** ** * * * ** * ***** * (5,3);
* ** * **** * * * ** ** ****** (2,5);
***** *** *** * * * *** * *** * * ** * * * * ** *** *** ** *** ** ** * * *** endl;
*** *** ** * * ** 0;

}
answered by (-218 points)
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//

// ** * * *** * *

// * *** *

//

// * ** * * by *** on ***

// ** ** ****** © 2017年 *** ** All rights * * *

//


** * ******* * * ***
* * *** * *

#include * **** * *

using ***** std;



class shape {

public:
***** * *** ** *** **** ** *** ***** width, double height){
* ** * *** *** * ** * * ** * * ** ** * = width;
* *** ***** * **** *** * * ** ** * ** ** = height;
* * ** * * * * *****



public:
* * ***** **** * * ** * ** w;
* ** * * * * * * * ** * h;

};



class *** public shape{

public:
*** * *** ** ** ** **** area(){
* * **** * * * ** * * * ** * * ** * * * * ******** ** ** **
* ** ** ** ** **

};



class *** *** public shape{

public:
***** ** * ** **** * * area(){
* ** * **** **** *** * ** **** ** ** *** **** * **** ***
** ** * *** * *

};



int main (){
* * * * * ****** *
* * * ** * ****** ***** * ** * rect;
* * * * ** * ** ** tri;
***** ***** ** ** * * * * * *** (5,3);
* * * ***** ** *** * * * **** (2,5);
* * * * ****** * ** * * ** *** ** * **** ** *** * * * * *** *** ** **** *** endl;
***** *** **** * ** * * * * 0;

}
answered by (-368 points)
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Hidden content!
***** * * * *** **

using * *** std;



class * **

{

public:
** ** * ** * * * * **** * a,int b);
** ** ** *** ** * area();
* * * *** * *** * * ** a_,b_;

};



void ***** * **** a,int b)

{
** * * ***** * ** ******
*** ***** ** * ****** * **

}



int * * * *

{
**** *** * *** ** ****

}





class *

{

* **** * * * *** **** ** * * ** a,int b);
*** * *** *** * *** * ** area();
** ****** * * ** * ******* * a_,b_;

};



void *** **** * ***** a,int b)

{
*** ** ** * ** * *
** **** ** *** *** ***

}



int * ** ** * *

{
* * * ** * * * *** **** *** a_*b_;

}



int main ()

{
* *** * *** * * *** * * * * ** ** rect;
******* * * * * ** tri;
* * * **** ** * *** *** * * (5,3);
* ** *** * ** *** ** ** ** ** * (2,5);
* * * *** * ** * * * ** * * *** * * **** * ** *** ** ** * * * * ** * * ** * ** * ** * endl;
** * ** * ** ** ** * 0;

}
answered by (-324 points)
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