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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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