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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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