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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)
0 like 0 dislike
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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