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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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Hidden content!
#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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