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C: prompt1. C is commonly used to describe the C: drive or the first hard drive on IBM compatible computers.

C programming book2. The C programming language is also a high-level programming language developed by Dennis Ritchie and Brian Kernighan at Bell Labs in 1972 from an almost unknown language named B. The first major program written in C was the Unix operating system, and for many years, C was considered to be inextricably linked with Unix. Below is an example of a C program that prints Hello World! after it's been compiled. If you need a free C compiler, consider GCC.

#include <stdio.h>

     printf ("Hello World!\n");

3. C is an abbreviation for Celsius.

4. C represents the scientific unit for the coulomb.

5. Shorthand for see or sea.

Also see: C++, Celsius, GCC, High-level language, Procedural language, Programming terms, Programming languages