static void Main(string[] args)
{
while (true)
{
Console.WriteLine("Type expression: ");
string expression = Console.ReadLine();
if (String.IsNullOrWhiteSpace(expression))
{
Console.WriteLine("Expresion cannot be empty.");
Console.WriteLine("----------------------------");
continue;
}
expression = expression.Replace(" ", "");
if (StringExpressionChecker.IsValid(expression))
{
//IStringExpressionEvaluator stringExpressionEvaluator = new SimpleStringExpressionEvaluator();
IStringExpressionEvaluator stringExpressionEvaluator = new ShuntingYardStringExpressionEvaluator();
decimal result = stringExpressionEvaluator.Evaluate(expression);
Console.WriteLine($"Result: {result}");
}
Console.WriteLine("----------------------------");
}
}
public void ShuntingYardStringExpressionEvaluator_Test3_ShouldPass()
{
// Arrange
const string expression = "4+5/2-1";
// Act
decimal result = new ShuntingYardStringExpressionEvaluator().Evaluate(expression);
// Assert
Assert.AreEqual(5.5m, result);
}
public void ShuntingYardStringExpressionEvaluator_Test9_ShouldPass()
{
// Arrange
const string expression = "(10-5)*(2+3)";
// Act
decimal result = new ShuntingYardStringExpressionEvaluator().Evaluate(expression);
// Assert
Assert.AreEqual(25m, result);
}
public void ShuntingYardStringExpressionEvaluator_Test5_ShouldPass()
{
// Arrange
const string expression = "0*2+5*1/5-5";
// Act
decimal result = new ShuntingYardStringExpressionEvaluator().Evaluate(expression);
// Assert
Assert.AreEqual(-4m, result);
}
