Guided Notes
Introduction to C
What C is and where it's used, compiling and running a program, the structure of main, printf output, and comments.
What C is
Slide 1 / 5C is a general-purpose, compiled programming language created by Dennis Ritchie at Bell Labs in 1972 to write the Unix operating system. It's small, fast, and close to the hardware.
C is still everywhere: • operating systems (Linux, Windows and macOS kernels), • embedded devices — cars, routers, medical devices, microcontrollers, • databases (SQLite, PostgreSQL, Redis) and language runtimes (Python is written in C).
Learning C teaches how computers really handle memory — knowledge that makes you better in every other language.