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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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