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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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