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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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