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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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Hidden content!
//

// * **** **

// ** ***

//

// ** * *** ** 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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