Expression And Types in C#

Expression

• The combination of operator and operand.
• We can use if condition, while, or dowhile that are required in the boolean condition.
• The final results will come as either 0 (or) 1.
• The goto statement cannot jump into blocks.
• For each statement used (It can be used in Array).

Step 1: Open Visual Studio 2015,



Step 2: Click New Project and choose Visual C# then Click Console Application, type App Name and then click Ok,



Step 3: Write the coding for the normal addition of two values,



Step 4: Click the start button to run the program,



Step 5: We can use more numbers of expression in our Program. The expression can run based on their precedence.The order of precedence is Bracket, Division, Multiplication, Addition, and Subtraction.



Step 6: Click Start button to run the program,



Step 7: Use Another Expression,



Step 8: Output



Type Systems in C#

• Value Types
• Reference Types

Value Types

• It can contain the data directly
• It cannot be null
• It can use primitives, Enums, Structs

Example: int i=10 (It can directly contain the data)

Reference Types

• It contains references to the objects
• It may be null
• It can use Classes, Interfaces, Arrays, Delegates

Example: String s="Good"; (The word "Good" can contain reference to s).