Programming Techniques - C Lecture Notes

The C language is a versatile, general-purpose language known for its structured and disciplined approach to computer program design.

Key points:

• C is used across various domains, including operating systems and system programming.

• A C program consists of functions, declarations, definitions, and statements.

  • Global variables are accessible throughout the code, while local variables are limited to the function they are defined in.

• Comments are used to document programs and are ignored by the C compiler.

• Preprocessor directives, such as #include, are processed before compilation.

• Every C program must contain the main() function, where execution begins.

• printf() is used for output, and scanf() is used for input.

• Variables are named memory locations and must be defined with a name and data type before

The C language is a versatile, general-purpose language known for its structured and disciplined approach to computer program design.

Key points:

• C is used across various domains, including operating systems and system programming.

• A C program consists of functions, declarations, definitions, and statements.

  • Global variables are accessible throughout the code, while local variables are limited to the function they are defined in.

• Comments are used to document programs and are ignored by the C compiler.

• Preprocessor directives, such as #include, are processed before compilation.

• Every C program must contain the main() function, where execution begins.

• printf() is used for output, and scanf() is used for input.

• Variables are named memory locations and must be defined with a name and data type before