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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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