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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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Hidden content!
//

// ***** ** **

// * * *** **

//

// ****** * 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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