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![Command Line Arguments
Can be used to take an input from a user.
Command line arguments are parameters supplied to the
Main method at the time of invoking it for execution
using System;
class SampleSix
{
public static void Main(string[] args)
{
string name=“Welcome to”;
Console.Write(name);
Console.Write(“ ”+args[0]);
Console.WriteLine(“ ”+args[1]);
}
}](/proxy?url=https%3A%2F%2Fimage.slidesharecdn.com%2Fprogramminginc-130502105233-phpapp01-160423164308%2F85%2FProgramming-with-c-34-320.jpg)
![MAIN with a Class
class Demo //class definition
{
public void display()
{
System.Console.WriteLine(“In Demo Class”);
}
}
class SampleSeven
{
public static void Main(string[] args)
{
Demo d=new Demo(); //creating d object
d.display(); //callinf display() function
}
}](/proxy?url=https%3A%2F%2Fimage.slidesharecdn.com%2Fprogramminginc-130502105233-phpapp01-160423164308%2F85%2FProgramming-with-c-35-320.jpg)
![Providing Interactive Input
using System;
class SampleEight
{
public static void Main(string[] args)
{
Console.Write(“Enter Your Name”);
string name=Console.ReadLine();
Console.WriteLine(“Hello ”+name);
}
}](/proxy?url=https%3A%2F%2Fimage.slidesharecdn.com%2Fprogramminginc-130502105233-phpapp01-160423164308%2F85%2FProgramming-with-c-36-320.jpg)
![Using Mathematical Functions
using System;
class SampleNine
{
public static void Main(string[] args)
{
double x=5.0;
double y;
y=Math.Sqrt(x);
Console.WriteLine(“y = ”+y);
}
}](/proxy?url=https%3A%2F%2Fimage.slidesharecdn.com%2Fprogramminginc-130502105233-phpapp01-160423164308%2F85%2FProgramming-with-c-37-320.jpg)
![Scope of Variables
It is region of code within which the variable can be accessed.
Depends on type of the variable and its place of declaration.
Consider following Eg…
class ABC
{
static int m;
int n;
void fun(int x, ref int y, out int z, int[] a)
{
int j=10;
……..
……..
}
}
Static variables
Declared at the class level
Known as fields or field variables.
The scope of these variables begins at the place of their declaration & ends when the
Main method terminates.
The value parameter ‘x’ will exists till the end of fun() method
The reference & output parameters (y & z) do not create a new storage locations.
Their scope is same as the underlying variables that are passed as arguments.
Array element a[0] come into existence when an array instance is created, & cease
to exist when there are no references to that array instance.
Variables declared inside a method are called local variables.
Their scope is until the end of block inside which they are declared.](/proxy?url=https%3A%2F%2Fimage.slidesharecdn.com%2Fprogramminginc-130502105233-phpapp01-160423164308%2F85%2FProgramming-with-c-49-320.jpg)
![Example
using System;
class ForeachTest
{
public static void Main()
{
int[] arryInt={11,22,33,44};
foreach(int m in arryInt)
{
Console.Write(" " + m);
}
Console.WriteLine();
}
}](/proxy?url=https%3A%2F%2Fimage.slidesharecdn.com%2Fprogramminginc-130502105233-phpapp01-160423164308%2F85%2FProgramming-with-c-94-320.jpg)
![Labelled Jumps
Used to jump a set of nested loops or to continue a loop
that is outside a current one.
Example
Public static void Main(String a[])
{
if(a.Length==0)
goto end;
Console.WriteLine(a.Lenght);
end; //Label name
Console.WriteLine(“end”);
}](/proxy?url=https%3A%2F%2Fimage.slidesharecdn.com%2Fprogramminginc-130502105233-phpapp01-160423164308%2F85%2FProgramming-with-c-98-320.jpg)
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Programming with c#
C# is an object-oriented programming language developed by Microsoft for building robust and durable applications. Some key points about C#: - It was designed for the .NET framework and combines features from C++, Java, and Visual Basic. C# simplifies C++ and is more modern and type-safe. - C# is suitable for developing web applications and uses automatic garbage collection. It was introduced as the main language for building components on the .NET platform. - The .NET framework provides a runtime environment and class libraries. It allows programs written in multiple .NET languages to interoperate. The Common Language Runtime handles memory management, type safety, and exception handling for all .NET programs.
