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"Hello world!" was the most used phrase in testing computer programs.
"hello world" was influenced by a seminar book called "The C Programming Language". In this book, "hello world" was used to to output something from the code. This was inherited from a Bell Laboratories internal memorandum written by Brian Kernighan on 1974.
The original version of this started without exclamation and with small letters. This was later changed to "Hello world!" or "Hello World!" or "HELLO WORLD!" etc...
"hello world" was influenced by a seminar book called "The C Programming Language". In this book, "hello world" was used to to output something from the code. This was inherited from a Bell Laboratories internal memorandum written by Brian Kernighan on 1974.
The original version of this started without exclamation and with small letters. This was later changed to "Hello world!" or "Hello World!" or "HELLO WORLD!" etc...
source(s):
http://en.wikipedia.org/wiki/Hello_world_program
http://digg.com/programming/The_history_of_the_Hello_World_program
http://en.wikipedia.org/wiki/Hello_world_program
http://digg.com/programming/The_history_of_the_Hello_World_program
The first known instance of the usage of the words "hello" and "world" together in computer literature occurred earlier, in Kernighan's 1972 Tutorial Introduction to the Language B1, with the following code:
main( ) {
extrn a, b, c;
putchar(a); putchar(b); putchar(c); putchar('!*n');
}
a 'hell';
b 'o, w';
c 'orld';
main( ) {
extrn a, b, c;
putchar(a); putchar(b); putchar(c); putchar('!*n');
}
a 'hell';
b 'o, w';
c 'orld';
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