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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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