public void AreaCirVolTest()
{
Assert.AreEqual(9 * Math.PI, MathFunctionsClass.areaOfCircle(3));
Assert.AreEqual(6 * Math.PI, MathFunctionsClass.circumferenceOfCircle(3));
Assert.AreEqual(56.54866776461, MathFunctionsClass.volumeOfHemisphere(3), 0.000001);
/* MathFunctionsClass.Square(1)
* .ShouldBe(1);
* oMathFunctionsClass.Square(6)
* .ShouldBe(36);*/
}
static void Main(string[] args)
{
//MathFunctionsClass mathFunctions = new MathFunctionsClass();
Console.WriteLine($"The value of 2pi squared is: {MathFunctionsClass.Square(2*Math.PI):F3}"); //F3 displays only 3 digits after decimal point
Console.Write("Enter radius：");
string userInput;
double radius;
userInput = Console.ReadLine();
// Converts to double type
radius = Convert.ToDouble(userInput);
Console.WriteLine("You entered {0}", radius);
Console.WriteLine("Area of Circle is {0}", MathFunctionsClass.areaOfCircle(radius));
Console.WriteLine("Circumference of Circle is {0:F4}", MathFunctionsClass.circumferenceOfCircle(radius));
Console.WriteLine("Volume of Hemisphere is {0}", MathFunctionsClass.volumeOfHemisphere(radius));
Console.WriteLine("Area of Triangle is {0}", MathFunctionsClass.areaOfTriangle(3, 4, 5));
var solution = MathFunctionsClass.quadraticEqn(1, 3, 1);
Console.WriteLine("Solutions are {0},{1}", solution.Item1, solution.Item2);
}
static void Main(string[] args)
{
bool loopContinue = true;
while (loopContinue)
{
DisplayMenu();//Display selection menu
// Use TryParse when reading the user input. This will avoid an
// Exception if the user types a letter for example.
if (Int32.TryParse(Console.ReadLine(), out int choice))
{
switch (choice)
{
case 1: //Circumference of Circle
Console.Write("Enter radius： ");
if (double.TryParse(Console.ReadLine(), out double r) && r > 0) //r need to be greater than 0
{
Console.WriteLine("You entered {0}", r);
Console.WriteLine("Circumference of Circle is {0:F3}", MathFunctionsClass.circumferenceOfCircle(r));
// loopContinue = false;
}
else
{
Console.WriteLine("Please enter a valid number.");
}
break;
case 2: //Area of Circle
Console.Write("Enter radius： ");
if (double.TryParse(Console.ReadLine(), out double rr) && rr > 0) //r need to be greater than 0
{
Console.WriteLine("You entered {0}", rr);
Console.WriteLine("Area of Circle is {0:F3}", MathFunctionsClass.areaOfCircle(rr));
// loopContinue = false;
}
else
{
Console.WriteLine("Please enter a valid number.");
}
break;
case 3: //Volume of Hemisphere
Console.Write("Enter radius： ");
if (double.TryParse(Console.ReadLine(), out double rrr) && rrr >= 0) //r need to be non-negative
{
Console.WriteLine("You entered {0}", rrr);
Console.WriteLine("Volume of Hemisphere is {0:F3}", MathFunctionsClass.volumeOfHemisphere(rrr));;
// loopContinue = false;
}
else
{
Console.WriteLine("Please enter a valid number.");
}
break;
case 4: //Area of a triangle given length of three sides
Console.WriteLine("calculates the area of a triangle given integer lengths of the three sides.");
Console.Write("Enter side length 1: ");
if (!Int32.TryParse(Console.ReadLine(), out int a) || a < 0)
{
break; //don't take negative value
}
Console.Write("Enter side length 2: ");
if (!Int32.TryParse(Console.ReadLine(), out int b) || b < 0)
{
break;
}
Console.Write("Enter side length 3: ");
if (!Int32.TryParse(Console.ReadLine(), out int c) || c < 0)
{
break;
}
Console.WriteLine("Area of Triangle is {0}", MathFunctionsClass.areaOfTriangle(a, b, c));
// loopContinue = false;
break;
case 5: //Solving a quadratic equation
Console.WriteLine("Solve ax^2+bx+c=0 given integer coeffients a, b, c.");
Console.Write("Enter a: ");
if (!Int32.TryParse(Console.ReadLine(), out int aa))
{
break; //validate input as integer
}
else if (aa == 0)
{
Console.WriteLine("You entered a=0. Equation will be solved as linear equation.");
}
;
Console.Write("Enter b: ");
if (!Int32.TryParse(Console.ReadLine(), out int bb))
{
break;
}
Console.Write("Enter c: ");
if (!Int32.TryParse(Console.ReadLine(), out int cc))
{
break;
}
if (aa != 0) //solve the quadratic equation only if a!=0
{
try
{
var solution = MathFunctionsClass.quadraticEqn(aa, bb, cc);
Console.WriteLine("Solutions are {0},{1}", solution.Item1, solution.Item2);
}
catch (ArithmeticException e)
{
Console.WriteLine("No Real Solution");
}
}
else if (bb != 0) //Equation will be solved as linear equation and have one root if b!=0
{
double root = -1.0 * cc / bb;
Console.WriteLine($"Solution is {root}");
// loopContinue = false;
break;
}
else if (cc != 0)
{
Console.WriteLine("Non-zero c=0. Solution does not exist.");
}
else
{
Console.WriteLine("a=b=c=0. x can be any number.");
}
//loopContinue = false;
break;
case 0:
loopContinue = false;
Console.WriteLine("Hit any key to exit.");
break;
// Any other integer selection, asked to put in valid input
default:
loopContinue = true;
Console.WriteLine("Please enter a valid input. ");
break;
}
if (loopContinue)
{
}
}
Console.WriteLine("Hit any key to continue.");
Console.ReadKey();
}
}
