static void Main(string[] args)
{
Stack user = new Stack();
Program count = new Program();
Regex rgx = new Regex(@"-?\d+\s?[+-/*%]\s?-?\d+");
Regex addToDictionary = new Regex(@"[a-zA-Z]\s?[=]\s?-?\d+");
Regex constants1 = new Regex(@"[a-zA-Z]\s?[+-/*%]\s?\d+");
Regex constants2 = new Regex(@"\d+\s?[+-/*%]\s?[a-zA-Z]");
int counter = 0;
bool running = true;
while (running)
{
Console.Write("[" + counter + "]> ");
string input = Console.ReadLine();
if( input == "exit" || input =="quit")
{
Console.WriteLine("Bye!!");
running = false;
}
else if(input == "lastq")
{
Console.WriteLine("> Your last expression was: " + "\" " + user.Expression + " \"");
}
else if (input == "last")
{
Console.WriteLine("> Your last answer was: " + "\" " + user.Answer + " \"");
}
else if (addToDictionary.IsMatch(input))
{
user.Constants(input);
}
else if (constants1.IsMatch(input))
{
string newInput = user.AddSpace(input);
string[] array = newInput.Split();
int value = user.constants[array[0]];
if(array[1] == "+")
{
user.EvalEx(value + "+" + array[2]);
}
else if(array[1] == "-")
{
user.EvalEx(value + "-" + array[2]);
}
else if (array[1] == "/")
{
user.EvalEx(value + "/" + array[2]);
}
else if (array[1] == "*")
{
user.EvalEx(value + "*" + array[2]);
}
else
{
user.EvalEx(value + "%" + array[2]);
}
Console.WriteLine(" = " + user.Answer);
}
else if (constants2.IsMatch(input))
{
string newInput = user.AddSpace(input);
string[] array = newInput.Split();
int value = user.constants[array[2]];
if (array[1] == "+")
{
user.EvalEx(array[0] + "+" + value);
}
else if (array[1] == "-")
{
user.EvalEx(array[0] + "-" + value);
}
else if (array[1] == "/")
{
user.EvalEx(array[0] + "/" + value);
}
else if (array[1] == "*")
{
user.EvalEx(array[0] + "*" + value);
}
else
{
user.EvalEx(array[0] + "%" + value);
}
Console.WriteLine(" = " + user.Answer);
}
else if(rgx.IsMatch(input))
{
user.EvalEx(input);
Console.WriteLine(" = " + user.Answer);
}
else
{
Console.WriteLine("> Please enter a valid expression or command");
counter -= 1;
}
counter += 1;
}
}
