“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。 /vO8s??
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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》。 |Lf>Z2E
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以下是用不同语言写成的Hello World程序的几个例子: 7vZtEwC)n
Ada ZEa31[@B[
with Ada.Text_Io; use Ada.Text_Io; @
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procedure Hello is AUjZYp
begin a4aM.o
Put_Line ("Hello, world!"); a8nqzuI
end Hello; cip5 -Z@8
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汇编语言 GYH{_Fq
+)$oy]
x86 CPU,DOS,TASM I(m*%>
MODEL SMALL ~i_YrTp
IDEAL BPO)<bx_
STACK 100H :`Kv\w.
X6 E^5m
DATASEG hNU$a?eVpR
HW DB 'Hello, world!$' D]tI's1
Z:eB9R#2y
CODESEG |xYr0C[Pq
MOV AX, @data u-</G-y
MOV DS, AX wH]5VltUT1
MOV DX, OFFSET HW Z?JR6;@W
MOV AH, 09H "xWrYq'"
INT 21H <tUl(q+ty
MOV AX, 4C00H zH|YVg
INT 21H (>]frlEU~
END xB4}9zN s
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x86 CPU,GNU/Linux,NASM V_\9t8
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). POXd ,ON9
;Enter this into "hello.asm" then type: pSa
pF)1>
;"nasm -f elf hello.asm" A4{14Y;?
;"ld hello.o -o hello" ) KvGJo)("
;"./hello" ==#mlpi`S[
u~c75Mk_v
section .data ;data section declaration Q Uy7Q$W
msg db 'Hello World!',0AH B<$(Nb5<
len equ $-msg ;string length ~#MXhhqB
b
I"+b\K
section .text ;code section declaration ^iA_<@[`X[
global _start ;entry point (start of execution) NJ^Bv`
_start: mov edx,len ;string length m+|yk.md
mov ecx,msg ;string start k%D|17I
mov ebx,1 ;file handle: stdout gUr#3#
mov eax,4 ;sys_write Uc%kyTBm1
int 80h ;kernel system call #nq$^H
G22{',#r8
mov ebx,0 ;return value {"PIS&]tR
mov eax,1 ;sys_exit 3s\}|LqX#
int 80h ;kernel system call ;SgPF:T>Q
Llf#g#T
'nIKkQ" N
x86 CPU,Windows,MASM32 3-/F]}0y6
.386 >\?RYy,s$
.model flat,stdcall \X2r?
option casemap:none icK>|
;Include 文件定义 Uee(1
include windows.inc s3-TBhAv
include user32.inc eC{St0
includelib user32.lib 8AVtUU
include kernel32.inc ?ESsma6
includelib kernel32.lib *$]50 \W
;数据段 u']}Z%A9`
.data p!o-+@ava
szCaption db 'A MessageBox!',0 {nPiIPH
szText db 'Hello,world!',0 v\lKY*@f
;代码段 )TfX}
.code 70<{tjyc
start: ,Dab(
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ??#SQSU
invoke ExitProcess,NULL "T@9#7Obu
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 'pnOHT
end start !tzk7D
dL]wu!wE
CzDV^Iv;Q{
AWK ;&dMtYb
BEGIN { print "Hello, world!" } b+`qGJrej
yGY:EvH^?
!$NQF/Ol
BASIC WJJmM*>JW
传统版BASIC(例如GWBASIC): 0Ke2%+yqJ
}Uu#N H
10 PRINT "Hello, world!" hnimd~E52k
20 END g4 3(N!@g
+'/C(5y)0X
或在提示符输入: ~ <36vsk
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?"Hello, world!":END \`0s %F:V}
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现代版BASIC(例如Quick BASIC): 11vAx9
~8&P*oFC
Print "Hello, world!" y?V^S;}&]
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以下的语句在Quick BASIC中同样有效: %Yt;)q3U
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? "Hello,world!" <0!<T+JQ
;i?rd f
G<-<>)zO!
BCPL Hqtv`3g
GET "LIBHDR" ,8.$!Zia
3bRW]mP8
LET START () BE fg7
$( q/^?rd
WRITES ("Hello, world!*N") Zts1BWL[
$) 1N[9\Yi
?AO22N|j
9;Q|"
T
Befunge VAo`R9^D#
"!dlrow olleH">v O!ilTMr
,
nDS\2
^_@ OZ33w-X<
:='I>Gn
yl&s!I
Brainfuck JEs@ky?{z
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< o%!s/Z1
+++++++++++++++.>.+++.------.--------.>+.>. l"1*0jgBw
D\Y,2!I
N!fjN >cw
C <#wVQ\0C
#include <stdio.h> R.?PD$;_M
8aJJ??o{
int main(void) 3Vbt(K
{ h=qT@)h1>
printf("Hello, world!\n"); u* G+=aV.6
return 0; j#U,zsv:
} .D*~UI
+eO>> ~Z
b!e0pFS;
C++ LJ6l3)tpD
#include <iostream> M0g=gmau
*+XiBho
int main() +/bD9x1H
{ qRR%aJ/
std::cout << "Hello, world!" << std::endl; dBwoAq`'
return 0; +v~x_E5FP
} \H9:%Tlp~4
d}%-vm} 0
ftKL#9,s(
C++/CLI ;%Px~g
int main() NG`Y{QT6N
{ K$:+]fJK
System::Console::WriteLine("Hello, world!"); ^ir)z@P?V
} O c.fvP^ZD
O._\l?m
R58NTPm
C# (C Sharp) %ZcS"/gf
class HelloWorldApp 9|3sNFGX
{ W/3sJc9
public static void Main() vvG"rU
{ ExQ\qp3
System.Console.WriteLine("Hello, world!"); 4*L*"vKa
} #.!#"8{0_
} UCXRF
xHqF_10S#
SME9hS$4
COBOL AusjN-IL
IDENTIFICATION DIVISION. 4l{$dtKbI
PROGRAM-ID. HELLO-WORLD. 93Zij<bH?e
Mna
yiJl
ENVIRONMENT DIVISION. c%WO#}r|
xXc>YTK'
DATA DIVISION. ~ g-(
m"-kkH{I
PROCEDURE DIVISION. c1r+?q$f
DISPLAY "Hello, world!". ;aj;(Z.p)
STOP RUN. AloL+eN@
pF7N = mO
<f`n[QD2z
Common Lisp G"m?2$^-A
(format t "Hello world!~%") `qYiic%
$2,tT;50g
e&2,cQRFV
DOS批处理 Te[v+jgLY,
@echo off W/%hS)75
echo "Hello, world!" [& Z-
*a
7{(UiQbf
KK5;6b
Eiffel -8Hc M\b
class HELLO_WORLD z9g ++]rkJ
o2=):2x
r{
creation 8sU5MQ5
make 4'=Q:o*w`
feature 8zpzVizDG
make is "\O7_od-
local Yku6\/^
io:BASIC_IO 6PYm?i=p?
do z HvE_-
!!io @0s'
(
io.put_string("%N Hello, world!") _"Z?O)d*
end -- make 6T|Z4f|
end -- class HELLO_WORLD *oeXmY
j}tM0Ug.U
t$%<eF@w
Erlang }^0'IAXi
-module(hello). !mTq6H12 !
-export([hello_world/0]). vBOY[>=
p^*a>d:d]
hello_world() -> io:fwrite("Hello, World!\n"). /8Y8-&K0
RRPPojKZ
B`<}YVA
Forth sT"ICooc
." Hello, world!" CR TIZ2'q5wg
4r`I)
u:lBFVqk
Fortran ?d3FR!
WRITE(*,10) 1/m$#sz
10 FORMAT('Hello, World!') Xz^k.4 Y{4
STOP iN.
GC^l
END 5I,NvHD4
~?Vo d|>
A_\Jb}J1<
HTML xGQP*nZ
<HTML> W4&8
<HEAD> [uHU[
sG
<TITLE> Hello World! </TITLE> Z{BK@Q4z
</HEAD> R.*;] R>M
<BODY> }~|`h1JF
<p>Hello World!</p> Uz_p-J0
</BODY> =.;ib6M
</HTML> R;pW,]}g,
xjiV9{w
g_IcF><F
HQ9+ .:f ao'
H ?8{Os;!je
K=HLMDs
.`m|Uf#"
_
INTERCAL $x`HmL3Sb
PLEASE DO ,1 <- #13 ZP!.C&O
DO ,1 SUB #1 <- #238 3e;|KU
DO ,1 SUB #2 <- #112 /KWdIP#
DO ,1 SUB #3 <- #112
sZCK?
DO ,1 SUB #4 <- #0 ?wPTe^Qtv
DO ,1 SUB #5 <- #64 vR:#g;mnk
DO ,1 SUB #6 <- #238 D.:`]W|
DO ,1 SUB #7 <- #26 vT0Op e6m
DO ,1 SUB #8 <- #248 Pe,k y>ow
DO ,1 SUB #9 <- #168 TK18U*z7J
DO ,1 SUB #10 <- #24 'g,_ lF
DO ,1 SUB #11 <- #16 x%r$/=
DO ,1 SUB #12 <- #158 (kB
DO ,1 SUB #13 <- #52 -k7b#
+T
PLEASE READ OUT ,1 i_Q1\_m !
PLEASE GIVE UP s7sd(f]=
~EY)c~H
3'kKbrk [
Java K"XwSZ/
public class Hello T@.+bD
{ G gA:;f46
public static void main(String[] args) X!LiekU!D
{ 9ybR+dGm+
System.out.println("Hello, world!"); Z(c
SM
} ;Us6:}s
} SQ> Yf\
:t!J
9
Z(tJd,
JSP :*,!gf
<% ^|.T\
out.print("Hello, world!"); )s^gT]"N
%> nVWU\$Ft
eA2*}"W
&odQ&%X
MIXAL Zf}2c8Vc4
TERM EQU 19 the MIX console device number Y\_mqd
ORIG 1000 start address l![79eFp
START OUT MSG(TERM) output data at address MSG 5I6?gv/
HLT halt execution CHv
n8tk
MSG ALF "MIXAL" FT~c|ep.
ALF " HELL" {$[0YRNk
u
ALF "O WOR" mfI[9G
ALF "LD " Bf00&PE;
END START end of the program 2= ;ZJ
u`Nrg<
";(m,if-
Nuva >S`=~4
<..直接输出..> @HMH>;haE
Hello, world! flqr["czwK
5OGwOZAj52
<..或者..> hs;|,r
!gRU;ZQU_
<. 0 fT*O
// 不带换行 3{co.+
? "Hello, world!" rwUhNth-Qh
=Xr{ Dg
// 或者 ,e1c,}
cwaR#-#
// 带换行
~m=Z>4M
?? 'Hello, world!' jWxa
[>
.> 7mi*#X}
?^!J:D?
g~K-'Nw
OCaml bt=D<YZk
let main () = mD +9/O!
print_endline "Hello world!";; _?{KTgJ G
/rD9)
e[T3,2C
Pascal teDRX13=;
program Hello; \)\n5F:Zu
begin E5P.x^
writeln('Hello, world!'); nY1PRX\
end. xP1D 9
wd|^m%
5?>Q[a.Ne
Perl K6B6@
#!/usr/local/bin/perl s!YX<V
print "Hello, world!\n"; *B&i `tq
;MYK TE>m
aRWj+[[7y
PHP Bt:M^b^
<?php rM~Mqpk
print("Hello, world!"); UVi9}zr
?> +gndW
C|FI4/-e
;+f(1=x
Pike j/uMSE
#!/usr/local/bin/pike e
jk?If 07
int main() :LX!T&
{ o%]b\Vl6
write("Hello, world!\n"); *yI( (G/
return 0; _%rkN0-(a
} r
H9}VA:h
tx1TtWo
_pS)bxw
PL/I d<\X)-"
Test: procedure options(main); +BI%.A`2
declare My_String char(20) varying initialize('Hello, world!'); 'SG<F,[3
put skip list(My_String); -t`KCf,0
end Test; |1OF!(:
p0Ij4
p'/%"
Prolog t2.]v><