“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。 1SO!a R#g
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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》。 @kmOz(
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以下是用不同语言写成的Hello World程序的几个例子: @M_p3[c\
Ada "CcdwWM
with Ada.Text_Io; use Ada.Text_Io; \Uh$%#}.
procedure Hello is GO<,zOqvU
begin "B"Yfg[
Put_Line ("Hello, world!"); ( {}Z
'
end Hello; xG"*w@fs7
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汇编语言 | g[iK1
gSn9L)k(O
x86 CPU,DOS,TASM =/zb$d cz
MODEL SMALL `+?g96
IDEAL G}8Zkz@+
STACK 100H ~P;KO40K
P<s0f:".
DATASEG zvAUF8'_
HW DB 'Hello, world!$' SG@-b(
2T >K!jS
CODESEG ~+OAAkJ9
MOV AX, @data DLBHZ?+!
MOV DS, AX C0v1x=(xiM
MOV DX, OFFSET HW (#?k|e"Y"`
MOV AH, 09H X+LG Z4]D
INT 21H R m^$Dn
MOV AX, 4C00H 5@&{%99
INT 21H JT(6Uf
END }X?M6;$)
wcW8"J'AH
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x86 CPU,GNU/Linux,NASM op5G}QZ
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Tc.k0n%W:b
;Enter this into "hello.asm" then type: BK;Gh0mp
;"nasm -f elf hello.asm" {.mPe|
;"ld hello.o -o hello" i0/RvrLc
;"./hello" Pua|Z
x
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section .data ;data section declaration 6G0Y,B7&
msg db 'Hello World!',0AH {$H-7-O$
len equ $-msg ;string length mA2L~=v#
OJ!=xTU%h
section .text ;code section declaration sfKu7p uc
global _start ;entry point (start of execution) (Xv'Te?
_start: mov edx,len ;string length
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mov ecx,msg ;string start "J(0J
mov ebx,1 ;file handle: stdout p;0p!~F=49
mov eax,4 ;sys_write Y5,[udF:O
int 80h ;kernel system call ":!7R<t
NcMohpkq
mov ebx,0 ;return value vj,OX~|
mov eax,1 ;sys_exit 43m@4Yb
int 80h ;kernel system call 6#gS`X23Y
d.Im{-S
mtd ,m
x86 CPU,Windows,MASM32 pEp`Z,p
.386 2*)2c[/0F
.model flat,stdcall K~6,xZlDWM
option casemap:none rU!QXg]uD
;Include 文件定义 Ql8s7 %
include windows.inc |x#w8=VP-
include user32.inc ]/ffA|"U`
includelib user32.lib R!Lh~~@{(
include kernel32.inc c+A$ [
includelib kernel32.lib 4-vo R5Fd
;数据段 }"x#uG
.data G~mLc
szCaption db 'A MessageBox!',0 %<]4]h
szText db 'Hello,world!',0 `WRM7
;代码段 o!@}&DE|*L
.code h'm-]v
start: ;vuqI5k
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ,$A'Y
invoke ExitProcess,NULL {a9(
Qi
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> '
Ih f|;r
end start ='G-wX&k
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AWK ^Iy'G44
BEGIN { print "Hello, world!" } 6 @A'N(I=O
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BASIC ;Y9-0W
传统版BASIC(例如GWBASIC): ?[VL
2dP0
MP_LdJM1E
10 PRINT "Hello, world!" [L ?^+p>
20 END {16]8-pe
R(AS$<p{!>
或在提示符输入: h
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?"Hello, world!":END N5d)&a
7?
-\[H>)z]RB
现代版BASIC(例如Quick BASIC): QCAoL.v
aDZ,9}
Print "Hello, world!" @i <vlHpl
FKBI.}A?!'
以下的语句在Quick BASIC中同样有效: PrqyJ
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? "Hello,world!" 9y+0Zj+.
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;_p$5GVR|
BCPL w&[&ZDsK
GET "LIBHDR" ;V0^uB.z
W"n0x8~sV
LET START () BE K
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$( F87/p
WRITES ("Hello, world!*N") 7SJR_G6,{
$) Z_;!f}X
8}K^o>J&K
CuT50N;tk
Befunge 38#Zlcf
"!dlrow olleH">v zvbO
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, 0PD=/fh[
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Brainfuck uL{CUt
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< /*2)|2w
+++++++++++++++.>.+++.------.--------.>+.>. IqAML|C
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C Bwl@Muw
#include <stdio.h> '\M]$`Et
5=_bK^Am
int main(void) Tx>V$+al
{ {n\Ai3F-
printf("Hello, world!\n"); f]48-X,^6
return 0; 43?uTnX/
} M;LR$'cP
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C++ mg]t)+ PQ
#include <iostream> i_(6}Y&
|=js!R|
int main() HtV8=.^
{ C2{*m{
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std::cout << "Hello, world!" << std::endl; fSVb.MZa7
return 0; _9C,N2a{C
} B~B, L*kC2
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C++/CLI AO238RC!:
int main() <? F-v
{ UC_o;
System::Console::WriteLine("Hello, world!"); Ggry,3X3
} JNv@MJb}
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C# (C Sharp) 0`V;;w8
class HelloWorldApp xzHb+1+p
{ [/o BjiBA
public static void Main() 8]mRX~
{ #/>
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System.Console.WriteLine("Hello, world!"); wk#cJ`wG;
} lVCnu>8
} $0R5 ]]db)
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a+RUSz;DL
COBOL jO-T1P']Y
IDENTIFICATION DIVISION. @ZRg9M:N
PROGRAM-ID. HELLO-WORLD. DwGRv:&HH
vmg[/#
ENVIRONMENT DIVISION. nC(Lr,(
2@W`OW Njm
DATA DIVISION. 2wu\.{6Zp
dVg'v7G&V(
PROCEDURE DIVISION. Ma4eu8
DISPLAY "Hello, world!". vi.INe
STOP RUN. R^B8** N
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Common Lisp OLo?=1&;;
(format t "Hello world!~%") n&,X']z.
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jx{
fel
DOS批处理 rJh$>V+ '
@echo off d_!}9
echo "Hello, world!" CaV@<T
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+/
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Eiffel <0;G4fE7[H
class HELLO_WORLD eLLOE)x
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creation &@FufpPw/
make lL'Bop@
feature qI>,PX
make is yuC|_nL
local k!bG![Ie|
io:BASIC_IO Yxy!&hPLv:
do 9oIfSr,y
!!io Sk:x.oOZ
io.put_string("%N Hello, world!") bI^F(
end -- make -Kw7!
=_ g
end -- class HELLO_WORLD zJ$U5r/u
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Vw3=jIQN:!
Erlang .K1wp G[4
-module(hello). FY-eoq0O3
-export([hello_world/0]). c>3j$D+
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hello_world() -> io:fwrite("Hello, World!\n"). >6Jz=N,
%mIdQQ,
u@P1`E1Q
Forth OsW*@v(
." Hello, world!" CR 8
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Fortran ~T/tk?:8Vi
WRITE(*,10) f$5\ b[O
10 FORMAT('Hello, World!') _8ks`O#}
STOP ;VE KrVD
END <2fy(9y
=**Q\Sl
%%#bTyF
HTML <Ql2+ev6
<HTML> 24
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<HEAD> Jz*A!Li
<TITLE> Hello World! </TITLE> cj^hwtx
</HEAD> u{w,y.l1h
<BODY> 0x<G\ l4
<p>Hello World!</p> Q5l+-
</BODY> %eh.@8GL`
</HTML> OG_v[ C5
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F>5b[q6~4
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H oad /xbp@/
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INTERCAL 8F'm#0
PLEASE DO ,1 <- #13 \.+:yV<$
DO ,1 SUB #1 <- #238 ;)SWwhQ
DO ,1 SUB #2 <- #112 `
@lNt}
DO ,1 SUB #3 <- #112 :6Tv4ZUvcG
DO ,1 SUB #4 <- #0 &;`E3$>
DO ,1 SUB #5 <- #64 o
q6^
DO ,1 SUB #6 <- #238 4)>S3Yr
DO ,1 SUB #7 <- #26 xJnN95`R@
DO ,1 SUB #8 <- #248 6!USSipn
DO ,1 SUB #9 <- #168 gzy|K%K
DO ,1 SUB #10 <- #24 qq_ZkU@xg
DO ,1 SUB #11 <- #16 :Rnwyj])
DO ,1 SUB #12 <- #158 uHRxV"@}[1
DO ,1 SUB #13 <- #52 "c?31$6
PLEASE READ OUT ,1 xn@oNKD0
PLEASE GIVE UP g>#}(u!PH
/1D.Ud^
X<pNc6
Java 5sj$XA?5
public class Hello =;F7h
@:
{ \zwm:@lG
public static void main(String[] args) s,pg4nst56
{ NxDVU?@p*
System.out.println("Hello, world!"); m8G/;V[x
} fU\;\
} +\u\BJ!LAJ
f! )yE`4-
'm"Ez'sS
JSP a#x@e?GvI
<% DO9K
out.print("Hello, world!"); ,rF!o_7
%> 'H4?V
B2KBJ4rI[1
FFe{=H,=
MIXAL p:eaZ
TERM EQU 19 the MIX console device number "q!*RO'a
ORIG 1000 start address `B:hXeI
START OUT MSG(TERM) output data at address MSG rhX?\_7o
HLT halt execution CJwzjH
MSG ALF "MIXAL" vA[7i*D{w
ALF " HELL" ,7DyTeMpN
ALF "O WOR" 94]i|2qj*
ALF "LD " y+V>,W)r7
END START end of the program cM4{ e^
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Nuva pp{GaCi
<..直接输出..> 3`RI[%AN~
Hello, world! *65~qAd
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<..或者..> 0I do_V
`2^(Ss#)
<. jxt]Z3a ~0
// 不带换行 CC'N"Xb
? "Hello, world!" {*r!oD!'
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// 或者 oIMS >&
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// 带换行 ,2i1 4H
?? 'Hello, world!' Tj\hAcD
.> ?YDMl
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O*x~a;?G
OCaml +
Okw+v
let main () = J4z&J SY
print_endline "Hello world!";; Dkh=(+> <
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- DYH>!
Pascal vQy<%[QO
program Hello; }w2Et
begin D0MW~Y6{
writeln('Hello, world!'); gS`Z>+V5!c
end. G `B=:s]
cWo__EE
Y?zo")
Perl <Lt"e8Z> x
#!/usr/local/bin/perl rSm#/)4A
print "Hello, world!\n"; gQ%mVJB{(
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PHP b^()[4M;
<?php PL!dkaD^y>
print("Hello, world!"); ~ahu{A4Bw
?> Cy B4apJ
,OP\^
4!-R&<TLve
Pike ] \!,yiVeU
#!/usr/local/bin/pike #e[r0f?U
int main() ,9ew75Jl
{ r(_Fr#Qn
write("Hello, world!\n"); * kUb[
return 0; 5lM 3In@
} e eyZ$n
/[Rp~YzW
gp
H@FX
PL/I H`Zg-j`
Test: procedure options(main); Bsd~_y}8
declare My_String char(20) varying initialize('Hello, world!'); %.Kr`#lCr
put skip list(My_String); ]@}hyM[D;
end Test; TC@F*B;
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|?MD>Pez
Prolog #SjCKQ~
goal De>,i%`Q,D
write("hello,world!"). -lq`EB+
YB^m!A),I[
6lkCLH
Python 'P4V_VMK
#!/usr/local/bin/python 1|>bG#|
print "Hello, world!" f9IqcCSW
v|(N
g?Rq .py]!
REXX MU:v& sk
say "Hello, world!" hgwS_L
/Bk`3~]E>
EQM[!g^a
Ruby 98uMD
#!/usr/bin/ruby fZJM'+J@A
print "Hello, world!\n" 77 Z:!J|
1:./f|m
I?%#`Rvu
Scheme AUfcf*
(display "Hello, world!") [;'$y:L=g
(newline) 0Jd>V
l2wu>Ar7.
d>r ]xXB6
sed (需要至少一行输入) 9+.3GRt7
sed -ne '1s/.*/Hello, world!/p' /c4$m3?]
p!<PRms@
)oM%
N
Smalltalk uaCI2I
Transcript show: 'Hello, world!' c]qh)F$s8
:3J`+V}9;
r/0AM}[!*j
SNOBOL qNMYZ0,
OUTPUT = "Hello, world!" $?LegX
END )]E?~ $,
rg]z
!.4q{YWcYk
SQL J @IKXhb7_
create table MESSAGE (TEXT char(15)); *xKy^f
insert into MESSAGE (TEXT) values ('Hello, world!'); R+/kx#^
select TEXT from MESSAGE; W* n|T{n
drop table MESSAGE; 5a2;@}%V
gl2l%]=\'
p6Ia)!xOGF
Tcl gh `_{l
#!/usr/local/bin/tcl tZ*>S]qD
puts "Hello, world!" lACS^(
kn`O3cW/
#&z'?x^a
TScript g"g3|$#Ej|
? "Hello, world!" ]{0OPU
N&(MM.\`^
H6KBXMYO
Turing %.fwNS
put "Hello, world!" Wi~?2-!
}b{7+ +
Ah
+]~}kvk:
UNIX-style shell hxw6^EA
程序中的/bin/sh可改为您使用的shell U0N6\+
;:Tb_4Hr
#!/bin/sh 8\PI1U
echo 'Hello, world!' b/E3Kse?
f>Tn#OW
muhu`
k`C
GUI -f?,%6(1
1] .m4vC
Delphi 3S%/>)k
program HelloWorld; TpHzf3.I
uses p>+Q6o9O
Dialogs; Ksk[sf?J&
begin A+fXt`YNM
ShowMessage('Hello, World!'); %"|W
qxv
end. sn'E}.uhXH
}"/>,
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