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produces a copy of its own source code
In computing, a quine is a computer program which produces a copy of its own source code as its only output.
clojure
(def s"(def s%s)(printf s(pr-str s))")(printf s(pr-str s))
cpp
#include <cstdio>
#define B(x) x; printf("{ B(" #x ") }\n");
int main()
{ B(printf("#include <cstdio>\n#define B(x) x; printf(\"{ B(\" #x \") }\\n\");\nint main()\n")) }
#define B(x) x; printf("{ B(" #x ") }\n");
int main()
{ B(printf("#include <cstdio>\n#define B(x) x; printf(\"{ B(\" #x \") }\\n\");\nint main()\n")) }
fsharp
(fun s -> printf "%s %s" s s) "(fun s -> printf \"%s %s\" s s)"
groovy
s="s=%s;printf s,s.inspect()";printf s,s.inspect()
evaluate s='char q=39;print"evaluate s=$q$s$q"'
s="s=%c%s%c;printf s,34,s,34";printf s,34,s,34
s='s=%c%s%1$c;printf s,39,s';printf s,39,s
printf _='printf _=%c%s%1$c,39,_',39,_
java
public class Quine {public static void main(String[] args) {String s = "public class Quine {public static void main(String[] args) {String s = %c%s%c;System.out.printf(s, 34, s, 34);}}";System.out.printf(s, 34, s, 34);}}
public class Quine {
public static void main(String[] args) {
Character cq = (char) 34;
Character cn = (char) 10;
Character cs = (char) 92;
String s = "public class Quine {\n public static void main(String[] args) {\n Character cq = (char) 34;\n Character cn = (char) 10;\n Character cs = (char) 92;\n String s = %c%s%c;\n System.out.printf(s, cq, s.replace(cn.toString(), cs.toString() + 'n'), cq);\n }\n}";
System.out.printf(s, cq, s.replace(cn.toString(), cs.toString() + 'n'), cq);
}
}
public static void main(String[] args) {
Character cq = (char) 34;
Character cn = (char) 10;
Character cs = (char) 92;
String s = "public class Quine {\n public static void main(String[] args) {\n Character cq = (char) 34;\n Character cn = (char) 10;\n Character cs = (char) 92;\n String s = %c%s%c;\n System.out.printf(s, cq, s.replace(cn.toString(), cs.toString() + 'n'), cq);\n }\n}";
System.out.printf(s, cq, s.replace(cn.toString(), cs.toString() + 'n'), cq);
}
}
ocaml
(fun s -> Printf.printf "%s %S" s s) "(fun s -> Printf.printf \"%s %S\" s s)"
(fun p -> Printf.printf p (string_of_format p)) "(fun p -> Printf.printf p (string_of_format p)) %S"
python
# adapted from a Quine by Sean B. Palmer
print (lambda s='print (lambda s=%r: (s %% s))()': (s % s))()
print (lambda s='print (lambda s=%r: (s %% s))()': (s % s))()
x='x=%r;print(x%%x)';print(x%x)
scala
val s="val s=%c%s%c; printf(s, 34, s, 34)"; printf(s, 34, s, 34)
