“Hello, World!”程序是一个只在计算机屏幕上打印出“Hello, World!”(英语,意为“世界,你好!”)字串的计算机程序。该程序通常是计算机程序设计语言的初学者所要学习编写的第一个程序。它还可以用来确定该语言的编译器、程序开发环境以及运行环境已经正确安装。 =@JS88+
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 m0|Ae@g~3
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以下是用不同语言写成的Hello World程序的几个例子: J3~hzgY
Ada ,](v?v.[4
with Ada.Text_Io; use Ada.Text_Io; Jh$"f r3
procedure Hello is F)/~p&H
begin
\f/#<|Hm
Put_Line ("Hello, world!"); *H5PT
end Hello; CZJHE>
BbrT f"`
Y9i9Uc.]
汇编语言 Nmp>UE,7[
LG=X)w)W4S
x86 CPU,DOS,TASM \5'O.*pr
MODEL SMALL %j*k
IDEAL *D?((_+
STACK 100H [,<\RviI
(Ffb&GL
DATASEG ZcMj=#i
HW DB 'Hello, world!$' Kc%n(,+%"
ovd^,?ib
CODESEG W$" Y%^L
MOV AX, @data h
L]8e>a?
MOV DS, AX z;dcAdz9
MOV DX, OFFSET HW k,,!P""
MOV AH, 09H 731h
~x!u
INT 21H psIkG0
&
MOV AX, 4C00H Hz}+SAZ
INT 21H &Y,Q>bu
END -F"d0a,
/ R_ u\?k(
^:4L6
x86 CPU,GNU/Linux,NASM (Sth:{;
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). uxa=KM1H
;Enter this into "hello.asm" then type: Q[J [=
;"nasm -f elf hello.asm" _0,"vFdj
;"ld hello.o -o hello" 8 7RHA $?
;"./hello" :be:-b%K
(R_CUH
section .data ;data section declaration ?R;nL{
msg db 'Hello World!',0AH 3sZ,|,ueD
len equ $-msg ;string length uAu( +zV2
$gVLk.
section .text ;code section declaration %z*29iKlI
global _start ;entry point (start of execution) )A="eW_>
_start: mov edx,len ;string length 9&jQ
35
mov ecx,msg ;string start f49"pTw7
mov ebx,1 ;file handle: stdout `$S^E !=
mov eax,4 ;sys_write +D:83h{
int 80h ;kernel system call 99^AT*ByY
2)wAFO6u
mov ebx,0 ;return value w`L~#yu
mov eax,1 ;sys_exit W|ReLM\
int 80h ;kernel system call %p0b{P j_p
I"ca+4]
Bk@)b`WR
x86 CPU,Windows,MASM32 !|B3i_n
.386 u3 ]Uxy
.model flat,stdcall [{`)j
option casemap:none Bul.RCP'
;Include 文件定义 sFLcOPj-%
include windows.inc B?SNea,I4
include user32.inc Z'Kd^`mt 9
includelib user32.lib 7}Bj|]b)~
include kernel32.inc ^:qD .h>&
includelib kernel32.lib NMXnrvS&
;数据段 (cvh3',
.data ^J8uhV;w
szCaption db 'A MessageBox!',0 6m9 7_NRO
szText db 'Hello,world!',0 #2 \8?UPd
;代码段 /xcJo g~F,
.code QhsMd-v
start: 9C_*3?6
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK s=MT,
invoke ExitProcess,NULL U,PZMz`2j
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> k, f)2<
end start <EtUnj:qK8
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C
9#uIC7M
AWK vYDSu.C@a
BEGIN { print "Hello, world!" } zI:(33)
eUt=n)*`
*B1x`=
BASIC "K ,bH
传统版BASIC(例如GWBASIC): UP\C"\
YMT8p\#rp
10 PRINT "Hello, world!" 0<g<GQ(E
20 END "OO96F
U^[<
或在提示符输入: %y>+1hakkX
Va7c#P?
?"Hello, world!":END ~L bS~_\C=
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现代版BASIC(例如Quick BASIC): BDy5J2<<7l
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Print "Hello, world!" B/mYoK
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以下的语句在Quick BASIC中同样有效: F;u7A]H^
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? "Hello,world!" s2%V4yy%
8h|M!/&2
Bz+.Qa+
BCPL 2{-!E ^g
GET "LIBHDR" p%F8'2)}
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LET START () BE U/Wrh($ #4
$( i'HPRY
WRITES ("Hello, world!*N") b6"}"bG
$) T7{<arL$
bpW!iY/q3
7:>sc]Z
Befunge pz7H To;p
"!dlrow olleH">v I5qM.@%zB
, Pt)S;6j
^_@ ~wOTjz
%:3'4;jh%
?6f7ld5
Brainfuck 03EV%Vc
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< |jT2W
+++++++++++++++.>.+++.------.--------.>+.>. x?
N.WABr;
C/G]v*MBQ
"(,2L,Zh
C mG2VZ>
#include <stdio.h> N5?IpE
~-_i
int main(void) gWOt]D/
{ #{$1z;i?f
printf("Hello, world!\n"); T~Ly^|Ihz
return 0; fG&=Ogy
} qbiK^gR
X4wH/q^
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C++ Fu7M0X'p
#include <iostream> 6YmP[%
T|;@T^
int main() R)oB!$k
{ %<}<'V0
std::cout << "Hello, world!" << std::endl; fW(/Loh
return 0; @vRwzc\
} ]78!!G[`
r|GY]9
W;zpt|kAH
C++/CLI zrRFn `B
int main() *}cSE|S%
{ #f{lC0~vA
System::Console::WriteLine("Hello, world!");
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6
} 0(y:$
{\G`]r-cM
#y1Bx,
C# (C Sharp) #DFp[\)1
class HelloWorldApp V}"
g~=
{ sI,W%I':d
public static void Main() Nxk(mec"
{ $6h*lT<
System.Console.WriteLine("Hello, world!"); J;}3t!
} XF*.Jg]
} M;jcUX_{
m%QSapV
;3"@g]e
COBOL VUtXxvH
IDENTIFICATION DIVISION. <T+!V-Pj*
PROGRAM-ID. HELLO-WORLD. &!L:"]=+
=']3(6*
ENVIRONMENT DIVISION. #.._c?%4/
C\}/"
DATA DIVISION. lpgd#vr
y('k`>C
PROCEDURE DIVISION. 8(f:U@BS
DISPLAY "Hello, world!". 6>`c1
\8f
STOP RUN. =\};it{u
NHm]`R,
0;<)\Wt=i9
Common Lisp 4)kG-[#
(format t "Hello world!~%") ^/@jwZ
w1`QIv
T2FE+ A]n9
DOS批处理 6C [E
@echo off *?t%0){
echo "Hello, world!" A"uULfnk
65TfFcQ<S
&GhPvrxI?
Eiffel MHi8E9_O
class HELLO_WORLD ZnW@YC#9
W*N$'%
creation IH9.F
make lg$zGa?
feature
y<:<$22O
make is z>m=h)9d~
local P7.' kX9
io:BASIC_IO ^oM|<";!?D
do 9'[ N1Un.=
!!io X4|4QgY
io.put_string("%N Hello, world!") x =q;O+7]
end -- make ~" i0x
end -- class HELLO_WORLD U{@5*4
Oy57 $
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Erlang @FO)0
-module(hello). wkUlrL/~
-export([hello_world/0]). LR(-<"
NZ0O,}m
hello_world() -> io:fwrite("Hello, World!\n"). 5PT5#[
MGJ.,tK1
=u[k1s?
Forth Wb}c=hZv
." Hello, world!" CR 2c5-)Dt)T
&;&ho+qD
X;oa[!k
Fortran 9$qm>,o
WRITE(*,10) (kv?33
10 FORMAT('Hello, World!') _)T5lEFl=
STOP r|u MovnV
END FRu]kZv2
aj^wRzJ}zA
P!G858V(
HTML <{5EdX
<HTML> _Q[$CcDEE
<HEAD> qOih`dla
<TITLE> Hello World! </TITLE> ar9]"s+'
</HEAD> )3Z ^h<"j
<BODY> Ej".axjT
<p>Hello World!</p> Uu 8,@W+
</BODY> #Lv2Zoi>G
</HTML> 6Orum/|h
*z*uEcitW
~Wo)?q8UY,
HQ9+ Y_woKc*
H G 0%6ch^%
%w7u]-tR
^.dsW0"0
INTERCAL W\&8auds
PLEASE DO ,1 <- #13 x^4xq#Bb7
DO ,1 SUB #1 <- #238 Qx;\USv
DO ,1 SUB #2 <- #112 U4aU}1RKz
DO ,1 SUB #3 <- #112 0Z[oKXm1p
DO ,1 SUB #4 <- #0 ]vWKR."4
DO ,1 SUB #5 <- #64 ydRC1~f0
DO ,1 SUB #6 <- #238 Bp8'pj;~
DO ,1 SUB #7 <- #26 {M-YHX>*;g
DO ,1 SUB #8 <- #248 ^?7`;/
DO ,1 SUB #9 <- #168 s<qe,'Y
DO ,1 SUB #10 <- #24 #]nx!*JNZ
DO ,1 SUB #11 <- #16 ={K`4BD
DO ,1 SUB #12 <- #158 ])xx<5Jt4
DO ,1 SUB #13 <- #52 =R*qP ;#
PLEASE READ OUT ,1 n2)q}_d
PLEASE GIVE UP *%{gYpn
QFYWA1<pDh
uwz)($~bp
Java J5^'HU3
public class Hello yW$0\E6<r
{ Hemq+]6^
public static void main(String[] args) 1pArZzm>
{ G:~k.1y[
System.out.println("Hello, world!"); {} 3${
} M$Zcn# A
} Z?wU
J]nohICe
VeW>[08
JSP \v'p/G)g
<% 6Yx4lWBR?
out.print("Hello, world!"); /YZr~|65
%> l
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b )B?
F
zuUW|r
MIXAL DRcNdO/1E
TERM EQU 19 the MIX console device number 6@rMtQfI
ORIG 1000 start address `DV.+>O-1
START OUT MSG(TERM) output data at address MSG mV3cp rRqv
HLT halt execution 9I6a"PGDb
MSG ALF "MIXAL" HZ'_r cv
ALF " HELL" 0u;4%}pD
ALF "O WOR" |Y?HA&
ALF "LD " zd@m~V
END START end of the program 7Zlw^'q$:L
M7pOLP_1jB
u6AA4(
Nuva 5`~PR
:dN
<..直接输出..> U4d:] z
Hello, world! IZpP[hov
vEJWFoeEFm
<..或者..> 0cj>mj1M
e
9;~P}
<.
OX\A|$GS
// 不带换行 I}1NB3>^
? "Hello, world!" ML|FQ
f&Gt|
// 或者 }H^+A77v
)h7<?@wv&
// 带换行 bbE!qk;hEP
?? 'Hello, world!' ?l9XAWt\
.> 17%Mw@+
PGqQ@6B
g:hjy@ w
OCaml ;lE%M
let main () = ?8'*,bK
print_endline "Hello world!";; F(>Np2oi6
.+$Q<L
LY%WD%pL
Pascal 45@^L's
program Hello;
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begin GPN]9
writeln('Hello, world!'); e|"WQ>
end. AE[b},-[
fdFo# P
qLD
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Perl IxY|>5z
#!/usr/local/bin/perl d3\qKL!~
print "Hello, world!\n"; p M4 :#%V
Mk"^?%PxT
H?yK~bGQ
PHP ,Lr.9I.
<?php k\5c|Wq|g
print("Hello, world!"); ~%<X0s|
?> La`N PY_:>
]Sf]J4eQ
-t!~%_WCv
Pike (A9Fhun
#!/usr/local/bin/pike rNXQf'*I
int main() zdB^S%cztS
{ ~vm%6CABM
write("Hello, world!\n"); Z^3rLCa
return 0; Fs9!S a7v
} (C\]-E>
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I|qo+u)
PL/I h4fJvOk|!
Test: procedure options(main); p`olCp'
declare My_String char(20) varying initialize('Hello, world!'); y0L_"e/
put skip list(My_String); c"f-3kFv
end Test; 6'k<+IR
oH97=>
y%"{I7!A
Prolog XP!S$Q]D
goal ;`0%t$@-
write("hello,world!"). C0T;![/4A
(KjoSN(
K
igCZ|Ru\
Python 9+Np4i@
#!/usr/local/bin/python Cio
1E-4
print "Hello, world!" R@1 xt@?
luh$2 \5B
f,U.7E
REXX UXJeAE-
say "Hello, world!" _>&X\`D
P)Jgs
` Fa~
Ruby X_q\S g
#!/usr/bin/ruby q+yQwX{
print "Hello, world!\n" f\|w'
n@<YI
|3('
N#|
Scheme 1+_`^|eK
(display "Hello, world!") )1?y 8_B
(newline) 3Z>Ux3[
r8`ffH
|mZxfI
sed (需要至少一行输入) 0"jY.*_EW
sed -ne '1s/.*/Hello, world!/p' xG~P+n7t5$
ER%^!xA
.]8ZwAs=&
Smalltalk l{*@v=b(
Transcript show: 'Hello, world!' c[0}AGJ
%z=le7
/CrSu
SNOBOL zVViLUwG
OUTPUT = "Hello, world!" 5%Y3 Kwyy
END (~p<
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