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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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