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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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Hidden content!
#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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