Summary C program

C Programming – Theory Notes

1. Introduction to C

• C is a general-purpose programming language.

• Developed by Dennis Ritchie at Bell Labs.

• It is a middle-level language.

• Used for system software and applications.



2. Features of C

• Simple and easy to learn

• Fast and efficient

• Portable

• Structured programming language

• Rich library functions



3. Structure of a C Program

• Documentation section

• Link section

• Definition section

• Global declaration

• Main function

• Subprograms



4. Variables

• Named memory location used to store data

• Value can change during execution

• Must start with letter or underscore

• Cannot use keywords

• Case-sensitive



5. Data Types

• int – Integer values