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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++
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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