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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 | 2.1k 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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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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