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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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#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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