how to multiply in visual studio code
/// <summary>
/// Check the answers to see if the user got everything right.
/// </summary>
/// <returns>True if the answer's correct, false otherwise.</returns>
private bool CheckTheAnswer()
{
if ((addend1 + addend2 == sum.Value)
&& (minuend - subtrahend == difference.Value)
&& (multiplicand * multiplier == product.Value)
&& (dividend / divisor == quotient.Value))
return true;
else
return false;
}
/// <summary>
/// Start the quiz by filling in all of the problem
/// values and starting the timer.
/// </summary>
public void StartTheQuiz()
{
// Fill in the addition problem.
// Generate two random numbers to add.
// Store the values in the variables 'addend1' and 'addend2'.
addend1 = randomizer.Next(51);
addend2 = randomizer.Next(51);
// Convert the two randomly generated numbers
// into strings so that they can be displayed
// in the label controls.
plusLeftLabel.Text = addend1.ToString();
plusRightLabel.Text = addend2.ToString();
// 'sum' is the name of the NumericUpDown control.
// This step makes sure its value is zero before
// adding any values to it.
sum.Value = 0;
// Fill in the subtraction problem.
minuend = randomizer.Next(1, 101);
subtrahend = randomizer.Next(1, minuend);
minusLeftLabel.Text = minuend.ToString();
minusRightLabel.Text = subtrahend.ToString();
difference.Value = 0;
// Fill in the multiplication problem.
multiplicand = randomizer.Next(2, 11);
multiplier = randomizer.Next(2, 11);
timesLeftLabel.Text = multiplicand.ToString();
timesRightLabel.Text = multiplier.ToString();
product.Value = 0;
// Fill in the division problem.
divisor = randomizer.Next(2, 11);
int temporaryQuotient = randomizer.Next(2, 11);
dividend = divisor * temporaryQuotient;
dividedLeftLabel.Text = dividend.ToString();
dividedRightLabel.Text = divisor.ToString();
quotient.Value = 0;
// Start the timer.
timeLeft = 30;
timeLabel.Text = "30 seconds";
timer1.Start();
}
public partial class Form1 : Form
{
// Create a Random object called randomizer
// to generate random numbers.
Random randomizer = new Random();
// These integer variables store the numbers
// for the addition problem.
int addend1;
int addend2;
// These integer variables store the numbers
// for the subtraction problem.
int minuend;
int subtrahend;
// These integer variables store the numbers
// for the multiplication problem.
int multiplicand;
int multiplier;
// These integer variables store the numbers
// for the division problem.
int dividend;
int divisor;
// This integer variable keeps track of the
// remaining time.
int timeLeft;
else
{
// If the user ran out of time, stop the timer, show
// a MessageBox, and fill in the answers.
timer1.Stop();
timeLabel.Text = "Time's up!";
MessageBox.Show("You didn't finish in time.", "Sorry");
sum.Value = addend1 + addend2;
difference.Value = minuend - subtrahend;
product.Value = multiplicand * multiplier;
quotient.Value = dividend / divisor;
startButton.Enabled = true;
}