3 - Statements and Operators.pdf

Transcript

1. Statements and Expressions tnngo2@gmail.com Programming in C#
2. Types of Statements Selection | if, else, switch, case Iteration | for, foreach, while Jump | break, continue, default, goto, return, yield Exception Handling | throw, try-catch, try-finally, try-catch-finally Checked and Unchecked Fixed | fixed, unsafe Lock
3. Types of Operators
4. Types of Operators Arithmetic Relational Logical Conditional Increment and Decrement Assignment
5. Arithmetic Operators are binary operators.
6. Relational Operators
7. Logical Operators Boolean Logical Operators Bitwise Logical Operators
8. Bitwise Logical Operators Boolean Logical Operators http://pastebin.com/BuXr5Zxq AND
9. Conditional Operators AND (&&) evaluates the second expression only if the first one return true. https://gist.github.com/2318365 OR (||) evaluates the second expression only if the first one return false. https://gist.github.com/2318398
10. Increment and Decrement Operators
11. Assignment Operators
12. Precedence and Associativity
13. Data Conversions
14. Typecasting
15. Implicit typecasting (Coercion) refers to an automatic conversion of data type done when the destination data types belong to the same hierarchy and the destination data type must hold a larger range of values than the source data type https://gist.github.com/2318445
16. Implicit typecasting (Coercion)
17. Explicit typecasting refers to changing a data type of higher precision into a data type of lower precision. the destination data type hold a smaller range of values than the source data type <tager data type> <variable name> = (target data type) <source data type>; https://gist.github.com/2318452
18. Explicit typecasting using built-in method System.Convert class Convert.ToChar(float) ToString() method https://gist.github.com/2318468
19. Boxing converting a value type to its reference type.
20. Unboxing converting a reference type to a value type
21. Boxing & Unboxing https://gist.github.com/2318516
22. Question? What is the result of the following code snippets? https://gist.github.com/2318553
23. Question? What is the result of the following code snippets? https://gist.github.com/2318553