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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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