public void SubstractionInputArgumentReturnedValue(int leftValue, int rightValue, int expectedValue)
{
var leftNumber = new Number()
{
Value = leftValue
};
var rightNumber = new Number()
{
Value = rightValue
};
var result = BinaryOperations.Subsctraction(leftNumber, rightNumber);
Assert.AreEqual(expectedValue, result.Value);
}
/// <summary>
/// The calculation of the converted expression.
/// </summary>
/// <param name="inputExpression"> Input the converted expression. </param>
/// <param name="firstNumber"> The first number. </param>
/// <param name="secondNumber"> The second number. </param>
/// <returns> Result of calculating the expression. </returns>
public static Number Counting(string inputExpression, Number firstNumber, Number secondNumber)
{
if (string.IsNullOrWhiteSpace(inputExpression))
{
throw new ArgumentNullException("The input expression cannot be empty.", nameof(inputExpression));
}
double result = 0;
var temp = new Stack <double>();
for (int i = 0; i < inputExpression.Length; i++)
{
if (char.IsDigit(inputExpression[i]))
{
string a = string.Empty;
while (!IsDelimeter(inputExpression[i]) && !IsOperator(inputExpression[i]))
{
a += inputExpression[i];
i++;
if (i == inputExpression.Length)
{
break;
}
}
temp.Push(double.Parse(a, CultureInfo.InvariantCulture));
i--;
}
else if (IsOperator(inputExpression[i]))
{
if (inputExpression[i] == '!')
{
firstNumber = new Number {
Value = temp.Pop()
}
}
;
else
{
firstNumber = new Number {
Value = temp.Pop()
};
secondNumber = new Number {
Value = temp.Pop()
};
}
switch (inputExpression[i])
{
case '+': result = BinaryOperations.Addition(secondNumber, firstNumber).Value; break;
case '-': result = BinaryOperations.Subsctraction(secondNumber, firstNumber).Value; break;
case '*': result = BinaryOperations.Multiplication(secondNumber, firstNumber).Value; break;
case '/': result = BinaryOperations.Division(secondNumber, firstNumber).Value; break;
case '%': result = BinaryOperations.DivisionReaminder(secondNumber, firstNumber).Value; break;
case '^': result = UnaryOperations.Exponentiation(secondNumber, firstNumber).Value; break;
case '!': result = UnaryOperations.Factorial(firstNumber).Value; break;
}
temp.Push(result);
}
}
return(new Number {
Value = temp.Peek()
});
}