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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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