Multiplication

pad pad

a. create a console base application named Multiplication whose Main() method asks the user to input an inter and then calls a method named multiplicationTable() which displays the results of multiplying the integer by each of the numbers 2 through 10

b. Create GUI application named MultiplicationGUI that calls the MultiplicationTable() method described in (a) after the user enters an integer into a TextBox and Clicks a Button.

Please help me in writing this two codes (a) console application (b) in window form application. I am not able execute.

12 Replies

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Vulpes12y ago
Accepted answer
For the console application, try this :

using System;

class Multiplication
{
static void Main()
{
Console.Write("Enter an integer : ");
string input = Console.ReadLine();
int num;
int.TryParse(input, out num); // returns num = 0 if input invalid
Console.WriteLine();
multiplicationTable(num);
Console.ReadKey();
}

static void multiplicationTable(int num)
{
for(int i = 2; i <= 10; i++)
{
Console.WriteLine("{0} x {1, -2} = {2}", num, i, num * i);
}
}
}

Sample output:

Enter an integer : 5

5 x 2 = 10
5 x 3 = 15
5 x 4 = 20
5 x 5 = 25
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
5 x 10 = 50

0
12y ago
Thank you for your explanation.
0
Vulpes12y ago
The GUI code assumes that two controls have been added to the form:

'btnTable' of type Button
'txtNumber' of type TextBox

If you're using VS to create the application then, when you drag controls from the ToolBox onto the form, the VS designer gives them default names:

For Buttons: button1, button2 etc.

For TextBoxes: textBox1, textBox2 etc.

If you want to to use your own names (like I've done), then you should change the Name property in the Properties Box straight away. Any events you subsequently add via the designer (such as the Click event for btnTable) will then be given the 'correct' names.

So 'txtNumber' is just the name I've chosen to give what would otherwise have been called textBox1.

The actual code for this will be found in Form1.Designer.cs - namely a private field (private TextBox txtNumber;) and code to instantiate it and initialize its properties in the InitializeComponent method - and is generated automatically by VS.

0
12y ago
I am quite new to Windows Forms Application. My question may be awkward one, where is txtNumber type defined?
0
Vulpes12y ago
The GUI code was working OK on my machine before I posted it.

What errors are you getting?
0
pad pad12y ago
Thank you for your time and helping me but when Iam trying this is not executing in GUI and I need program in this model 5 x 2 = 10 5 x 3 = 15 5 x 4 = 20 5 x 5 = 25 5 x 6 = 30 5 x 7 = 35 5 x 8 = 40 5 x 9 = 45 5 x 10 = 50
0
Vithal Wadje12y ago
good work
0
pad pad12y ago
Please help I tried this but its not beguging in my system.It showing some errors
0
Vulpes12y ago
The equivalent Windows Forms app to the above Console app, would be on the following lines:

public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void btnTable_Click(object sender, EventArgs e)
{
int num;
int.TryParse(txtNumber.Text, out num);
multiplicationTable(num);
}

private void multiplicationTable(int num)
{
string table = "";

for (int i = 2; i <= 10; i++)
{
table += String.Format("{0} x {1, -2} = {2}\r\n", num, i, num * i);
}

MessageBox.Show(table);
}
}

0
pad pad12y ago
Thank you. I got it and I need help to write same program in GUI
0
Munesh Sharma12y ago
for console application i didnt get ..can you tell me the format .. means in which manner u want output
0
Munesh Sharma12y ago
GUI application

https://answers.yahoo.com/question/index?qid=20130319185257AAwsc9A

or this
double of = 0;
double from = 0;
double to = 0;
double ans = 0;

private void button1_Click(object sender, EventArgs e)
{
Table.Items.Clear();
if (double.TryParse(Of.Text, out of) == true && double.TryParse(From.Text, out from) == true && double.TryParse(To.Text, out to) == true)
{
of = double.Parse(Of.Text);
from = double.Parse(From.Text);
to = double.Parse(To.Text);

for (double i = from; i <= to; i++)
{
ans = i * of;
Table.Items.Add(of + " x " + i + " = " + ans.ToString());
}

}
else
{
MessageBox.Show("Please enter a valid value");
}
}
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