static void Main(string[] args)
{
bool endVar = false;
string menuOptionS = "";
string expression = "A1-12-C1";
string varName = "";
string tempVal = "";
double varVal = 0.0;
int menuOptionV = 0;
ExpTree newExpTree = new ExpTree(expression);
do //a do while loop tha continues going through the menu and different functions till quit
{
Console.WriteLine(">>>>>>>>>> Menu <<<<<<<<<<");
Console.WriteLine("(Shunting Yard expression = \"" + newExpTree.shuntingYardAlgo(expression) + "\")");
Console.WriteLine("(Current expression = \"" + expression + "\")");
Console.WriteLine("\t 1 = Enter a new expression");
Console.WriteLine("\t 2 = Set a variable value");
Console.WriteLine("\t 3 = Evaluate tree");
Console.WriteLine("\t 4 = Quit");
menuOptionS = Console.ReadLine();
if (!int.TryParse(menuOptionS, out menuOptionV))
{
Console.WriteLine("Error: Only ints for menu selection\n");
}
else
{
menuOptionV = Convert.ToInt32(menuOptionS);
switch (menuOptionV)
{
case 1:
Console.Write("Enter new expression: ");
expression = Console.ReadLine();
Console.WriteLine();
newExpTree = new ExpTree(expression);
Console.Clear();
Console.ForegroundColor = ConsoleColor.Cyan;
Console.WriteLine("New Expression Has Been Chosen");
Console.ResetColor();
break;
case 2:
Console.Write("Enter variable name: ");
varName = Console.ReadLine();
Console.WriteLine();
Console.Write("Enter variable value: ");
tempVal = Console.ReadLine();
varVal = Convert.ToDouble(tempVal);
newExpTree.SetVar(varName, varVal);
Console.WriteLine();
break;
case 3:
Console.WriteLine(newExpTree.Eval());
break;
case 4:
endVar = true;
break;
}
}
} while (!endVar);
Console.WriteLine("Done");
}