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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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