C#

• Introduction
• Getting Output
• Datatype
• Variable Declaration
• Operator
• string concatenation
• Converting Datatype
• Getting input from user
• Working on Angles
• Escape Sequence
• Conditional Statements
• If statement
• Switch statement
• Types of Error
• Exception Handling
• Loop
• While Loop
• For Loop
• Do While Loop
• Array
• Foreach Loop
• Multi dimensional array
• Nested Loop
• Jump Statment
• String Handling Function
• Methods or Functions
• Passing Parameter
• Method Overloading
• Void Function
• Returning Function
• Class
• Creating New Instance
• Static Keyword
• Constructor
• Constructor Overloading
• Destructor
• Inheritance
• Multi Level Inheritance
• Multiple Inheritance
• Sealed Class
• Partial Class
• Upcasting
• Abstract Class
• Interface
• Ref,Out,In Parameters
• Field Vs Property
• Struct
• DateTime
• Enum
• Namespace
• Dynamic Link Library(DLL)
• Collections
• File Handling
• Excel handling

Getting input from user

We already studied how to print values in console using Console.WriteLine(). Now we going to study how to get input from user using Console.ReadLine(). In the following code example, the user can input a number, which will be stored inside variable num. Then we are printing out its cube value.

NOTE:
1. We going to get input from user in Console. Whatever you going to type in Console will be in string type. so if we want to store it to a variable with different datatype we need to convert accordingly.
2. We going to use class called Math which already defined with lot of basic mathematical methods.

CODE

static void Main(string[] args) {
    // Type a number and press enter
    Console.WriteLine("Enter Number : ");

    // Create a int variable and get user and store it in the variable
    int num = Convert.ToInt32(Console.ReadLine());

    // Print cube Value
    Console.WriteLine("Cube Value is " + Math.Pow(num,3)); //Math.Pow(num,3) is the short way of writing num power 3
}

Exercises
1. Get A and B Value, Find (A + B)^2 value using its Formula
2. Get A and B Value, Find (A - B)^2 value using its Formula
3. Get A and B Value, Find (A + B)^3 value using its Formula
4. Get A and B Value, Find (A - B)^3 value using its Formula

(Click Here, For more exercises)