thumb|Simple C-language source code example, a procedural programming language. The resulting program prints "hello, world" on the computer screen. This first known "Hello world" snippet from the seminal book The C Programming Language originates from Brian Kernighan in the Bell Laboratories in 1974.
thumb|simple c-language source code example a procedural programming language the resulting program prints "hello world" on the computer screen this first known "hello world" snippet from the seminal book the c programming language originates from brian kernighan in the bell laboratories in 1974