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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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