C.ppt
- 1. 1 Objectives ❏ To understand the structure of a C-language program. ❏ To write your first C program. ❏ To introduce the include preprocessor command. ❏ To be able to create good identifiers for objects in a program. ❏ To be able to list, describe, and use the C basic data types. ❏ To be able to create and use variables and constants. ❏ To understand input and output concepts. ❏ To be able to use simple input and output statements. Introduction to the C Language
- 2. 2 Background C is a structured programming language. It is considered a high-level language because it allows the programmer to concentrate on the problem at hand and not worry about the machine that the program will be using. That is another reason why it is used by software developers whose applications have to run on many different hardware platforms.
- 3. 3 C Programs It's time to write your first C program. Structure of a C Program Your First C Program Comments The Greeting Program Topics discussed in this section:
- 4. 4 Structure of a C Program
- 7. 7 Examples of Block Comments
- 8. 8 Examples of Line Comments
- 9. 9 Identifiers One feature present in all computer languages is the identifier. Identifiers allow us to name data and other objects in the program. Each identified object in the computer is stored at a unique address.
- 11. 11 C is a case-sensitive language. Note
- 12. 12 Examples of Valid and Invalid Names
- 13. 13 Data Types
- 15. 15 Integer Types
- 16. 16 sizeof (short) ≤ sizeof (int) ≤ sizeof (long) ≤ sizeof (long long) Note
- 17. 17 Typical Integer Sizes and Values for Signed Integers
- 19. 19 sizeof (float) ≤ sizeof (double) ≤ sizeof (long double) Note
- 20. 20 Type Summary
- 21. 21 Variables Variables are named memory locations that have a type, such as integer or character, which is inherited from their type. The type determines the values that a variable may contain and the operations that may be used with its values. Variable Declaration Variable Initialization Topics discussed in this section:
- 22. 22 Variables
- 23. 23 Examples of Variable Declarations and Definitions
- 25. 25 Constants Constants are data values that cannot be changed during the execution of a program. Like variables, constants have a type. In this section, we discuss Boolean, character, integer, real, complex, and string constants. Constant Representation Coding Constants Topics discussed in this section:
- 26. 26 Symbolic Names for Control Characters
- 27. 27 Examples of Integer Constants
- 28. 28 Examples of Real Constants