Introduction to C Language

1. Introduction to C language advantages Of C Languages Structure of C Program Writing and compiling C Program Introduction to C Language

2. Introduction to C Language The C programming language was designed by Dennis Ritchie at Bell Laboratories in the early 1970s It was influenced by the following programming languages: ALGOL 60 (1960), CPL (Cambridge, 1963), BCPL (Martin Richard, 1967), B (Ken Thompson, 1970)

3. Advantages Of C Modularity General Purpose Programming Language Middle Level Language Portability Speed Of Compilation

4. Disadvantages Of C Lack of OOP features No Namespace features No concept of constructor and destructor

5. Interpretation Interpretation and compilation are different ways of translating high-level languages. Interpreter is program that executes program statements Generally execute one line/command at a time Limited processing power E asy to debug, make changes, view intermediate results L anguages : BASIC, LISP , Perl, Matlab , C-shell

6. Compilation Translates statements into machine language D oes not execute, but creates executable program C hange requires recompilation L anguages : C, C++, Fortran, Pascal

7. Structure Of C Program

8. Documentation: Name of the programmer Other detail about the program which the programmer think can be useful later Preprocessor Statements: Begins with # sign. Command to include header files or symbolic constant before compiling the program

9. Global Declarations: Declaration of function or the global variables. Main Function: Execution starts from here

10. Compiling C Program Preprocessing: Read source code and evaluate preprocessor part. Compiling: Convert source code to assembly code Assembling: Create object code. Linking: Link above object code files and other library files to produce one complete executable file.

11. Compiling C Program

12. Sample C Program

13. Compiling C Program

14. Unsuccessful Compilation

15. List of Errors

16. Successful Compilation

17. Running the Program

18. Output