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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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