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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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#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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