Consider again the triangle classification program with a slightly different specification: The program reads floating values from the standard input. The three values A, B, and C are interpreted as representing the lengths of the sides of a triangle. The program then prints a message to the standard output that states whether the triangle, if it can be formed, is scalene, isosceles, equilateral, or right angled. Determine the following for the above program: Part a: For the boundary condition A+B>Ccase (scalene triangle), identify test cases to verify the boundary. Part b: For the boundary condition A = C case (isosceles triangle), identify test cases to verify the boundary. Part c: For the boundary condition A = B = C case (equilateral triangle), identify test cases to verify the boundary. Part d: For the boundary condition A2 +B2 = C2 case (right-angle triangle), identify test cases to verify the boundary.
Please find my implementation in C++.
// Triangle.cpp : Defines the entry point for the console
application.
//
//Include header file
//#include "stdafx.h"
#include<iostream>
//Add namespace
using namespace std;
//Declare the class
class Triangle
{
//Declare variables
float a, b, c;
public:
//Declare the required member functions
void input();
void TriangleType();
};
//Method to check the type of the triangle
void Triangle::TriangleType()
{
//Test case to check whether the triangle is
equilateral
if (a == b == c)
cout << "\nTriangle is
equilateral Triangle.\n";
//Test case to check whether the triangle is
isocles
else if ((a == b) || (a == c) || (c == b))
cout << "\nTriangle is
isoceles Triangle.\n";
//Test case to check whther the triangle is right
angled triangle
else if (((a * a) + (b*b) == c*c) || ((a * a) + (c *
c) == b*b)
|| ((c * c) + (b * b) == a * a))
cout << "Triangle is
Right Angled Triangle.\n";
//Test case to check whether we are unable to make
a triangle
else if (((a + b) < c) || (c + b) < a || (a + c)
< b)
cout << "\n These sides
are unable to make a triangle. Pls try again.";
//Test case to check the scalene triangle
else
cout << "\nTriangle is
Scalene Triangle.\n";
}
//Method to take input
void Triangle::input()
{
cout << "Enter the sides of the
triangle.";
cout<<"Values should be between 1 to 50:\n
";
cout << "\na is : ";
//Test case to take the positive input
try
{
cin >> a;
if (a < 0)
throw
a;
else if (a > 50){
cout
<< "\nPlease enter the value within 1-50 : ";
cin >> a;
}
}
//catch block to handle the exception
catch (float num)
{
cout << "\nNegative
numbers are not allowed.";
cout<<"\nPls again enter
the value : ";
cin >> a;
}
cout << "\nb is : ";
//Test case to take the positive input
try
{
cin >> b;
if (b < 0)
throw
b;
else if (b > 50){
cout
<< "\nPlease enter the value within 1-50 : ";
cin >>
b;
}
}
//catch block to handle the exception
catch (float num)
{
cout << "\nNegative
numbers are not allowed.";
cout<<"\n Pls again
enter the value : ";
cin >> b;
}
cout << "\nc is : ";
//Test case to take the positive input
try
{
cin >> c;
if (c < 0)
throw
c;
else if (c > 50){
cout
<< "\nPlease enter the value within 1-50 : ";
cin >> c;
}
}
//catch block to handle the exception
catch (float num)
{
cout << "\nNegative
numbers are not allowed.\nPls again enter the value: ";
cin >> c;
}
}
//Define the main function
int main()
{
//create object of the class
Triangle ob;
char ch;
//start do-while loop
do
{
//call the methods
ob.input();
ob.TriangleType();
cout << "Do you want to
continue (y/n):";
cin >> ch;
} while (ch != 'n');
//pause the system for a while
system("pause");
return 0;
}
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