: Modular blocks of code that perform specific tasks. Every C program must have at least one function: main() .
: General utility functions (memory management, random numbers, process control). : String manipulation (e.g., strcpy , strlen ). : Mathematical operations (e.g., sqrt , pow , sin ). 5. Historical Context Limbajul C
: Input and output operations (e.g., printf , scanf ). : Modular blocks of code that perform specific tasks