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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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