private void InitializeCalculator()
{
currentNumber = 0;
previousNumber = 0;
decimalPlaces = 0;
currentOperation = operation.None;
DisplayArea.Text = currentNumber.ToString();
}
private void FactorialButton(object sender, RoutedEventArgs e)
{
Equals(operation.Factorial);
if (previousNumber % 1 > 0 || previousNumber < 0)
{
InitializeCalculator();
currentOperation = operation.Error;
UpdateDisplay();
}
else
{
Equals(operation.Equals);
}
}
private void Equals(operation nextOp)
{
switch (currentOperation)
{
case operation.None:
previousNumber = currentNumber;
break;
case operation.Equals:
break;
case operation.Plus:
previousNumber = previousNumber + currentNumber;
break;
case operation.Minus:
previousNumber = previousNumber - currentNumber;
break;
case operation.Multiply:
previousNumber = previousNumber * currentNumber;
break;
case operation.Divide:
previousNumber = previousNumber / currentNumber;
break;
case operation.Factorial:
previousNumber = Factorial(previousNumber);
break;
case operation.Root:
previousNumber = Math.Sqrt(previousNumber);
break;
}
if (currentOperation != operation.Equals)
{
currentNumber = 0;
}
decimalPlaces = 0;
currentOperation = nextOp;
UpdateDisplay();
}
private void PerformCalculation(operation previousOperation)
{
List <double> lstNums = new List <double>();
switch (previousOperation)
{
case operation.Add:
lstNums = txtDisplay.Text.Split('+').Select(double.Parse).ToList();
txtDisplay.Text = (lstNums[0] + lstNums[1]).ToString();
break;
case operation.Sub:
lstNums = txtDisplay.Text.Split('-').Select(double.Parse).ToList();
txtDisplay.Text = (lstNums[0] - lstNums[1]).ToString();
break;
case operation.Mul:
lstNums = txtDisplay.Text.Split('*').Select(double.Parse).ToList();
txtDisplay.Text = (lstNums[0] * lstNums[1]).ToString();
break;
case operation.Div:
try
{
lstNums = txtDisplay.Text.Split('/').Select(double.Parse).ToList();
txtDisplay.Text = (lstNums[0] / lstNums[1]).ToString();
} catch (DivideByZeroException)
{
txtDisplay.Text = "EEEEEE";
}
break;
case operation.None:
break;
default:
break;
}
}
public void OpFunction(double fNumber, operation op)
{
firstNumber = fNumber;
curentOperation = op;
}
public void OpFunction(double fNumber, operation op)
{
firstNumber = fNumber;
curentOperation = op;
}
static void Main(string[] args)
{
//welcome string declaration
string welcome = "Welcome to Simple Calculator - created by Kamil Jankowski";
//display character '-' to separate welcome and program content
for (int i = 0; i < welcome.Length; i++)
{
Console.Write("-");
}
Console.WriteLine("");
Console.WriteLine(welcome);
//display character '-' to separate welcome and program content
for (int i = 0; i < welcome.Length; i++)
{
Console.Write("-");
}
Console.WriteLine("");
Console.WriteLine("");
//set value
double num, b, c, r, val;
operation o = new operation();
first_val fval = new first_val();
fval.get_val();
//test and read value
while (!(double.TryParse(fval.str, out num)))
{
Console.WriteLine("This is not a number. Please try again.");
fval.get_val();
}
if (double.TryParse(fval.str, out num))
{
Console.WriteLine("This is a number.");
val = Convert.ToDouble(fval.str);
b = fval.read_val(val);
Console.WriteLine("Return: {0}", b);
//display operation options
Console.WriteLine("Select operation from the following options: ");
Console.WriteLine("1) ADD ");
Console.WriteLine("2) SUBSTRACT ");
Console.WriteLine("3) MULTIPLE ");
Console.WriteLine("4) DEVIDE ");
char oper = Convert.ToChar(Console.ReadLine());
//check if operation 1-4 has been chosen
if ((oper == '1') || (oper == '2') || (oper == '3') || (oper == '4'))
{
Console.WriteLine("Good choice");
}
//if wrong/none operation , display options again
while ((oper != '1') && (oper != '2') && (oper != '3') && (oper != '4'))
{
Console.WriteLine("No operation. Please select operation from 1 - 4.");
Console.WriteLine();
Console.WriteLine("Select operation from the following options: ");
Console.WriteLine("1) ADD ");
Console.WriteLine("2) SUBSTRACT ");
Console.WriteLine("3) MULTIPLE ");
Console.WriteLine("4) DEVIDE ");
//read input and convert to char; check if input is between 1-4
oper = Convert.ToChar(Console.ReadLine());
if ((oper == '1') || (oper == '2') || (oper == '3') || (oper == '4'))
{
Console.WriteLine("Good choice");
}
}
//set another value and test
fval.get_val();
//false ask again about value
while (!(double.TryParse(fval.str, out num)))
{
Console.WriteLine("This is not a number. Please try again.");
fval.get_val();
}
//true
if (double.TryParse(fval.str, out num))
{
Console.WriteLine("This is a number.");
val = Convert.ToDouble(fval.str);
c = fval.read_val(val);
Console.WriteLine("Return: {0}", c);
switch (oper)
{
case '1':
r = o.add(b, c);
Console.WriteLine("Operation ADD Return: {0}", r);
break;
case '2':
r = o.substract(b, c);
Console.WriteLine("Operation SUBSTRACT: {0}", r);
break;
case '3':
r = o.multiple(b, c);
Console.WriteLine("Operation MULTIPLE: {0}", r);
break;
case '4':
r = o.divide(b, c);
Console.WriteLine("Operation DIVIDE: {0}", r);
break;
}
Console.WriteLine("Do you want to contine? (y/n): ");
char oper_again = Convert.ToChar(Console.ReadLine());
//if true then continue to ask about operation and value
while (oper_again == 'y')
{
//display operation options
Console.WriteLine("Select operation from the following options: ");
Console.WriteLine("1) ADD ");
Console.WriteLine("2) SUBSTRACT ");
Console.WriteLine("3) MULTIPLE ");
Console.WriteLine("4) DIVIDE ");
oper = Convert.ToChar(Console.ReadLine());
//check if operation 1-4 has been chosen
if ((oper == '1') || (oper == '2') || (oper == '3') || (oper == '4'))
{
Console.WriteLine("Good choice");
}
//if wrong/none operation , display options again
while ((oper != '1') && (oper != '2') && (oper != '3') && (oper != '4'))
{
Console.WriteLine("No operation. Please select operation from 1 - 4.");
Console.WriteLine();
Console.WriteLine("Select operation from the following options: ");
Console.WriteLine("1) ADD ");
Console.WriteLine("2) SUBSTRACT ");
Console.WriteLine("3) MULTIPLE ");
Console.WriteLine("4) DEVIDE ");
oper = Convert.ToChar(Console.ReadLine());
if ((oper == '1') || (oper == '2') || (oper == '3') || (oper == '4'))
{
Console.WriteLine("Good choice.");
}
}
fval.get_val();
while (!(double.TryParse(fval.str, out num)))
{
Console.WriteLine("This is not a number. Please try again.");
fval.get_val();
}
if (double.TryParse(fval.str, out num))
{
Console.WriteLine("This is a number.");
val = Convert.ToDouble(fval.str);
c = fval.read_val(val);
//select and run operation
switch (oper)
{
case '1':
r = o.new_add(c);
Console.WriteLine("Operation ADD Return: {0}", r);
break;
case '2':
r = o.new_substract(c);
Console.WriteLine("Operation SUBSTRACT: {0}", r);
break;
case '3':
r = o.new_multiple(c);
Console.WriteLine("Operation MULTIPLE: {0}", r);
break;
case '4':
r = o.new_divide(c);
Console.WriteLine("Operation DIVIDE: {0}", r);
break;
}
Console.WriteLine("Do you want to contine? (y/n): ");
oper_again = Convert.ToChar(Console.ReadLine());
}
}
// if no and yes
while ((oper_again != 'n') && (oper_again != 'y'))
{
Console.WriteLine("Wrong data. Please choose yes or no.");
Console.WriteLine("Do you want to contine? (y/n): ");
oper_again = Convert.ToChar(Console.ReadLine());
}
//if true then continue to ask about operation and value
while (oper_again == 'y')
{
//display operation options
Console.WriteLine("Select operation from the following options: ");
Console.WriteLine("1) ADD ");
Console.WriteLine("2) SUBSTRACT ");
Console.WriteLine("3) MULTIPLE ");
Console.WriteLine("4) DIVIDE ");
oper = Convert.ToChar(Console.ReadLine());
if ((oper == '1') || (oper == '2') || (oper == '3') || (oper == '4'))
{
Console.WriteLine("Good choice");
}
while ((oper != '1') && (oper != '2') && (oper != '3') && (oper != '4'))
{
Console.WriteLine("No operation. Please select operation from 1 - 4.");
Console.WriteLine();
Console.WriteLine("Select operation from the following options: ");
Console.WriteLine("1) ADD ");
Console.WriteLine("2) SUBSTRACT ");
Console.WriteLine("3) MULTIPLE ");
Console.WriteLine("4) DEVIDE ");
oper = Convert.ToChar(Console.ReadLine());
if ((oper == '1') || (oper == '2') || (oper == '3') || (oper == '4'))
{
Console.WriteLine("Good choice.");
}
}
//another value
fval.get_val();
while (!(double.TryParse(fval.str, out num)))
{
Console.WriteLine("This is not a number. Please try again.");
fval.get_val();
}
if (double.TryParse(fval.str, out num))
{
Console.WriteLine("This is a number.");
val = Convert.ToDouble(fval.str);
c = fval.read_val(val);
//select and run operation
switch (oper)
{
case '1':
r = o.new_add(c);
Console.WriteLine("Operation ADD Return: {0}", r);
break;
case '2':
r = o.new_substract(c);
Console.WriteLine("Operation SUBSTRACT: {0}", r);
break;
case '3':
r = o.new_multiple(c);
Console.WriteLine("Operation MULTIPLE: {0}", r);
break;
case '4':
r = o.new_divide(c);
Console.WriteLine("Operation DIVIDE: {0}", r);
break;
}
Console.WriteLine("Do you want to contine? (y/n): ");
oper_again = Convert.ToChar(Console.ReadLine());
}
}
//terminate program
if (oper_again == 'n')
{
Console.WriteLine("Thank you. God Bye.");
}
}
}
Console.ReadKey();
}
private void Answer(object sender, RoutedEventArgs e)
{
SByte a = 1;
dotted = false;
double kof = 10, number = 0, buf = 0, answer = 0;
int itk = 1;
operation c = operation.plus;
for (int i = 0; i < lol.Text.Length; i++)
{
if (lol.Text[i] == '-')
{
a = -1;
}
bool isNumeric = Char.IsDigit(lol.Text[i]);
if (isNumeric)
{
if (Math.Abs(kof) == 10)
{
number *= (double)kof;
}
if (kof < 1)
{
number += (double)kof * (lol.Text[i] - '0');
}
else
{
number += (double)lol.Text[i] - (double)'0';
}
}
else if (lol.Text[i] == '.')
{
kof = 1;
}
if (Math.Abs(kof) < 10)
{
kof /= 10;
}
isNumeric = false;
if (IsOperand(i) || i == lol.Text.Length - 1)
{
number *= a;
a = 1;
switch (c)
{
case operation.plus:
answer = (double)buf + (double)number;
break;
case operation.minus:
answer = (double)buf - (double)number;
break;
case operation.multiply:
answer = (double)buf * (double)number;
break;
case operation.div:
answer = (double)buf / (double)number;
break;
case operation.power:
answer = Math.Pow((double)buf, (double)number);
break;
}
buf = answer;
char b = lol.Text[i];
switch (b)
{
case '＋':
c = operation.plus;
break;
case '－':
c = operation.minus;
break;
case 'Ｘ':
c = operation.multiply;
break;
case '／':
c = operation.div;
break;
case '^':
c = operation.power;
break;
}
kof = 10;
number = 0;
itk++;
}
}
signed = false;
if (memoryMode)
{
MemoryBox.Text = answer.ToString(System.Globalization.CultureInfo.InvariantCulture);
}
else
{
lol.Text = answer.ToString(System.Globalization.CultureInfo.InvariantCulture);
}
if (Math.Round(answer) != answer)
{
dotted = true;
}
if (Double.IsNaN(answer) || Double.IsInfinity(answer) ||
Double.IsNegativeInfinity(answer) || Double.IsPositiveInfinity(answer))
{
undefinedValue = true;
}
else
{
undefinedValue = false;
}
}
