static string CreateFormulaForDisplay(CalculatorOutput output)
{
StringBuilder builder = new StringBuilder();
List <int> operands = output.Operands;
for (int i = 0; i < operands.Count; i++)
{
builder.Append(operands[i]);
if (i != operands.Count - 1)
{
builder.Append(output.Operator);
}
}
builder.Append($"={output.Result}");
return(builder.ToString());
}
static void Main(string[] args)
{
var calculator = CreateCalculator(args);
do
{
Console.Write("Enter operator (*,/,+,-): ");
string oper = Console.ReadLine();
Console.Write("Enter string: ");
string input = Console.ReadLine();
try
{
CalculatorOutput output = calculator.Calculate(input, oper);
Console.WriteLine(CreateFormulaForDisplay(output));
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
} while (true);
}
