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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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