CommonLisp Hello World!
CommonLisp Hello World!
Click on RUN button to see the output
Common Lisp online compiler
Write, Run & Share Common Lisp code online using OneCompiler's Common Lisp online compiler for free. It's one of the robust, feature-rich online compilers for Common Lisp language, running the latest Common Lisp version 5.3. Getting started with the OneCompiler's Common Lisp editor is easy and fast. The editor shows sample boilerplate code when you choose language as Common Lisp. OneCompiler also has reference programs, where you can look for the sample code and start learning. Happy learning!!
Read inputs from stdin
OneCompiler's Common Lisp online editor supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample Common Lisp program which takes name as input and prints hello message with your name.
(setq name (read)) (princ "Hello ") (write name)
About Common Lisp
Common Lisp is a generic language suitable for a wide range of industry applications. It is often referred as Programmable programming language because of it's high extensibility, machine independence, extensive control structures, dynamic updation of programs etc.
Common LISP was invented by John McCarthy in 1958 and was first implemenyted by Steve Russell on an IBM 704 computer.
- Global variables are declared using
defvarkeyword and these variables will be in effect until a new value is assigned.
- Type declaration is not required in LISP
(defvar x 10) (write x)
- Local variables are declared with in a function or a procedure. The scope of local variables will be only in that function.
progare used to declare local variables.
(let ((var1 value1) (var2 value2).. (varn valuen))<expressions>)
- You can also create global and local variables using
(setq a 10)
This is the simplest looping mechanism in LISP. This allows the execute the set of statements repeatedly until a return statement is encountered.
For loop is used to iterate a set of statements based on a condition.
(loop for loop-variable in <a list> do (action) )
Do is also used to iterate a set of statements and then check the condition
(do ((var1 val1 updated-val1) (var2 val2 updated-val2) (var3 val3 updated-val3) ...) (test return-value) (s-expressions) )
Dotimes is used to iterate for fixed number of iterations.
(dotimes (n val) statements