C# Programs

Friday, 4 July 2014

Write C# code to produce the output shown below:

x value y value expression result

10 5 x=y+3 x=8

10 5 x=y-2 x=3

10 5 x=y*5 x=25

10 5 x=x/y x=2

10 5 x=x%y x=0

Solution:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Csharp_exercises
{
class Program
{
static void Main(string[] args)
{

int x=10;

int y=5;

Console.WriteLine("Result:");

Console.WriteLine("x value\t\ty value\t\tExpressions\tResult");

Console.WriteLine("{0,-8}\t{1,-8}\tx=y+3 \t x={2,-8}",x,y,y + 3);
Console.WriteLine("{0,-8}\t{1,-8}\tx=y-2 \t x={2,-8}", x, y, y-2);
Console.WriteLine("{0,-8}\t{1,-8}\tx=y*5 \t x={2,-8}", x, y, y*5);
Console.WriteLine("{0,-8}\t{1,-8}\tx=x/y \t x={2,-8}", x, y, (float)x/y);
Console.WriteLine("{0,-8}\t{1,-8}\tx=x%y \t x={2,-8}", x, y, x%y);

Console.ReadLine();
}
}
}

Write C# code to prompt a user to input his/her name and then the output will be shown as an example below:

Hello GEORGE!

Solution:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Csharp_exercises
{
class Program
{
static void Main(string[] args)
   {

string name;
Console.Write("Please enter your name:");
name = Console.ReadLine();
Console.WriteLine("Hello {0}!", name);
Console.ReadLine();
         }
   }
}

Write C# code to declare two integer variables, one float variable, and one string variable and assign 10, 12.5, and "C# programming" to them respectively. Then display their values on the screen.

Solution:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Csharp_exercises
{
class Program
{
static void Main(string[] args)
{

int x;
float y;
string s;
x = 10;
y = 12.5f;
s = "C# programming";
Console.WriteLine(x);
Console.WriteLine(y);
Console.WriteLine(s);
Console.ReadLine();
}
}
}

Write C# code to display the asterisk pattern as shown below:

*****

Solution:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Csharp_exercises
{
class Program
{
static void Main(string[] args)
{

   Console.WriteLine("*****");
   Console.WriteLine("*****");
   Console.WriteLine("*****");
   Console.WriteLine("*****");
   Console.WriteLine("*****");
   Console.ReadLine();
        }
    }
}

Write C# code to declare a variable to store the age of a person. Then the output of the program is as an example shown below:

You are 20 years old.

Solution:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace Csharp_exercises

{

class Program

{

static void Main(string[] args)

{

int age = 20;// declaring variable and assign 20 to it.

Console.WriteLine("You are {0} years old.",age);

Console.ReadLine();

}

UNDERSTANDING PARAMETER

using System;

namespace Understanding_Parameter
{
  class Program
   {
     // function with parameter
     public static int power(int num1)
   {
   int result;
   result = num1 * num1;
   return result;
   }

     static void Main(string[] args)
   {
   int pow;
   // passing arguement as parameter
   pow = Program.power(5);
   Console.Write("\nPower = {0}", pow);
   Console.ReadLine();
   }
   }
}

Wednesday, 22 January 2014

Auto-Refresh using Javascript

<html>
<head>
<script type="text/JavaScript">
<!--
function timedRefresh(timeoutPeriod) {

        setTimeout("location.reload(true);",timeoutPeriod);
}
//   -->
</script>
</head>
<body onload="JavaScript:timedRefresh(5000);">
<p>This page will refresh every 5 seconds. This is because we're using the 'onload' event to call our function. We are passing in the value '5000', which equals 5 seconds.</p>
<p>But hey, try not to annoy your users too much with unnecessary page refreshes every few seconds!</p>
</body>
</html>