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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

edited by | 5.3k views
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Hidden content!
#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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