static void Main(string[] args)
{
Console.WriteLine("Enter your expression: ");
var userInput = Console.ReadLine();
while (!string.IsNullOrEmpty(userInput))
{
Console.WriteLine("Convert as reversed polish notation or as usual polish notation? (RPN/PN): ");
switch (Console.ReadLine()?.ToLower())
{
case "rpn":
{
try
{
Console.WriteLine($"Converted expression: \n{PolishNotationConverter.ConvertRpn(userInput)}");
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
break;
}
case "pn":
{
try
{
Console.WriteLine($"Converted expression: \n{PolishNotationConverter.ConvertPn(userInput)}");
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
break;
}
default: Console.WriteLine("Invalid command."); break;
}
Console.WriteLine("Enter your expression: ");
userInput = Console.ReadLine();
}
}
public void ConvertToPolishNotationCorrectly(string expression, string expected) => PolishNotationConverter.ConvertPn(expression).Should().Be(expected);
public void ThrowOnInvalidBracketSequence(string invalidExpression)
{
Assert.Throws <InvalidExpressionException>(() => PolishNotationConverter.ConvertPn(invalidExpression));
}
public void BeAbleToConvertFunctions() =>
PolishNotationConverter.ConvertPn("x ^ y / (-5 * z) + 10 + func(a, b, c) / 3")
.Should().Be("+ + / ^ x y * -5 z 10 / func a b c 3");
