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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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