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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)
0 like 0 dislike
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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