public void Test_Printing_Instructions_For_Long_Expressions()
{
var expression = new MathExpression("7/2+14*9-5-15*500");
var instructions = new StringBuilder();
instructions.AppendLine("PUSH 7");
instructions.AppendLine("PUSH 2");
instructions.AppendLine("DIVIDE");
instructions.AppendLine("PUSH 14");
instructions.AppendLine("ADD");
instructions.AppendLine("PUSH 9");
instructions.AppendLine("MULTIPLY");
instructions.AppendLine("PUSH 5");
instructions.AppendLine("SUBTRACT");
instructions.AppendLine("PUSH 15");
instructions.AppendLine("SUBTRACT");
instructions.AppendLine("PUSH 500");
instructions.AppendLine("MULTIPLY");
instructions.AppendLine("PRINT");
StringAssert.AreEqualIgnoringCase(
expression.createProgramInstructions().ToString(),
instructions.ToString()
);
}
public void Test_Printing_Instructions_For_Single_Value()
{
var expression = new MathExpression("13");
var instructions = new StringBuilder();
instructions.AppendLine("PUSH 13");
instructions.AppendLine("PRINT");
StringAssert.AreEqualIgnoringCase(
expression.createProgramInstructions().ToString(),
instructions.ToString()
);
}
static void Main(string[] args)
{
Console.WriteLine("Welcome");
while (true)
{
Console.WriteLine("Enter your math expressions:");
string expressionText = Console.ReadLine();
MathExpression expression;
try
{
expression = new MathExpression(expressionText);
Console.WriteLine(expression.createProgramInstructions());
}
catch (Exception)
{
Console.WriteLine("Invalid Expression");
}
}
}