“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。 2x e_Q70II
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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》。 E yNI]XEj
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以下是用不同语言写成的Hello World程序的几个例子: QY+#Vp<`
Ada #2ZXYH}
with Ada.Text_Io; use Ada.Text_Io; &t%CuU]/@
procedure Hello is B<1*p,z
begin `1EBnL_1
Put_Line ("Hello, world!"); 1`O`!plD+
end Hello; 46_<v=YSJ
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汇编语言 <O5;w
RMC|(Q<
x86 CPU,DOS,TASM ` N(.10~
MODEL SMALL 8<n8joO0
IDEAL *`}_e)(k
STACK 100H CI{]o&Tf
MVt#n\_BZV
DATASEG #EHBS~^
HW DB 'Hello, world!$' qoZ* sV
6j"(/X|Ex5
CODESEG h| UT/:
MOV AX, @data IU$bP#<
MOV DS, AX {'DP/]nK
MOV DX, OFFSET HW sxThz7#i)
MOV AH, 09H |~\K:[T&
INT 21H +crAkb}i
MOV AX, 4C00H `zzX2R Je
INT 21H mApn(&
END x(]s#D!)
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,xD{A}}V
x86 CPU,GNU/Linux,NASM R8'yQ#FVy
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). {Y/|7Cl0
;Enter this into "hello.asm" then type: eU%5CVH.v
;"nasm -f elf hello.asm" TdKl`"Iy
;"ld hello.o -o hello" h*MR5qa
;"./hello" J+IW
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section .data ;data section declaration SOK2{xCG
msg db 'Hello World!',0AH 9Biw!%a
len equ $-msg ;string length Dx <IS^>i
ik$wS#1+L
section .text ;code section declaration $,aU"'D
global _start ;entry point (start of execution) =R>Sxaq
_start: mov edx,len ;string length J.<eX=<
mov ecx,msg ;string start l*v([@A\
mov ebx,1 ;file handle: stdout =rBFMTllM
mov eax,4 ;sys_write IN%>46e`
int 80h ;kernel system call }2NH>qvY
=fsaJ@q,R
mov ebx,0 ;return value vhL&az
mov eax,1 ;sys_exit ^F" *;8$
int 80h ;kernel system call \^#1~Kx
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';ZJuJ.
x86 CPU,Windows,MASM32 WN?T*bz2
.386 fwq|8^S@
.model flat,stdcall l4/TJ%`MG
option casemap:none `|/|ej]$P
;Include 文件定义 q #p)E=$
include windows.inc 5z]dA~;*2
include user32.inc 'nT#3/rL
includelib user32.lib %M`|0g}!
include kernel32.inc {?!hUi+
includelib kernel32.lib u^]yz&9V
;数据段 p +T&9
.data cEqh|Q
szCaption db 'A MessageBox!',0 P);Xke
szText db 'Hello,world!',0 rmabm\QY
;代码段 %'=oMbi>i4
.code :%>8\q>UX
start: M`>W'<
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK
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invoke ExitProcess,NULL @wFm])}0
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Cfi2N V
end start z9'0&G L
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jSVO$AW~C
AWK Vks,3$
BEGIN { print "Hello, world!" } NDg]s2T
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GDcV1$NA
BASIC )_Oc=/c|f
传统版BASIC(例如GWBASIC): D/:)rj14b
}cPV_^{
10 PRINT "Hello, world!" i&HV8&KygN
20 END Dw#&x/G
e{}o:r
或在提示符输入: _bd#C
PR'FSTg
?"Hello, world!":END ]bR'J\Fwl
:5*<QJuI#A
现代版BASIC(例如Quick BASIC): 6=g7|}
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m/}*
Print "Hello, world!" [.Y=~)7FB
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以下的语句在Quick BASIC中同样有效: =
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? "Hello,world!" ZF
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rx;U/)~#<
?hmb"^vlG
BCPL 62_$O"
GET "LIBHDR" i4pJIb
0K2[E^.WN
LET START () BE :RQ[(zD]
$( MMAC,4
WRITES ("Hello, world!*N") IW1\vfe
$) QVH_B+
Q
Ck:J
< 5PeI
Befunge )aC+qhh
"!dlrow olleH">v JdRs=#X
, >'jM8=o*Ax
^_@ CS{9|FNz
h|H;ZC(B
GMNb;D(>K
Brainfuck E\zhxiI
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< L[bGO|O
+++++++++++++++.>.+++.------.--------.>+.>. BJE <~"
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C {
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#include <stdio.h> l
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#TWc` 8
int main(void) nGbrWu]w
{ sy?>e*-{
printf("Hello, world!\n"); !kcg#+s91
return 0; .'a |St
} mr1}e
VM~!
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uqUo4z 5T
C++ Z:v1?v
#include <iostream> _UBI,Dg]
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int main() qck/b
{ nAg(lNOWN
std::cout << "Hello, world!" << std::endl; zoJ;5a.3B
return 0; K;qZc\q
} PWMaB
j VZi_de
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C++/CLI *o[%?$8T
int main() duS #&w
{ LasH[:QQQ
System::Console::WriteLine("Hello, world!"); ^ ?=K)
} nsT|,O
#$w#"Nr9k
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C# (C Sharp) 3ngLEWT
class HelloWorldApp sb
@hGS
{ 3CE8+PnT
public static void Main() s=TjM?)
{ -T?IkL)
System.Console.WriteLine("Hello, world!"); //Gvk|O1
} O i0;.<kX
} gQuw|u
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&di
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COBOL 0 MIMs#
IDENTIFICATION DIVISION. gDub+^ye>/
PROGRAM-ID. HELLO-WORLD. Hl;p>>n
BFOFes`>~
ENVIRONMENT DIVISION. Oez}C,0
.m?~TOR
DATA DIVISION. .( h$@|Y
{^W,e ^:
PROCEDURE DIVISION. \.c
)^QQ
DISPLAY "Hello, world!". Hg`{9v
STOP RUN. V]]qu:Mh8
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Common Lisp 'pY;]^M
(format t "Hello world!~%") O ->eg
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DOS批处理 mi<D
bnou
@echo off \+3Wd$I
echo "Hello, world!" -o_TC
tb0E?&M
CFm1c1%Hg
Eiffel HY4E
class HELLO_WORLD Pp_3 nyQ
nb_^3K]r
creation 2<G1'7)
make q|X4[E|{Q
feature qffSq](D.
make is
f_!`~`04
local Tr0V6TS7
io:BASIC_IO 1Wk
EPj,
do \83A|+k
!!io ^|GtO.
io.put_string("%N Hello, world!") n2mw@Ay!
end -- make ox_h9=$-
end -- class HELLO_WORLD r.b6E% D
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Erlang y,?G75wij
-module(hello). J md
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-export([hello_world/0]). `b ")Bx|
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hello_world() -> io:fwrite("Hello, World!\n"). 2A}u qaF
=>0M3 Qh{
S<3!oDBs
Forth wDSUMB<?
." Hello, world!" CR m"(d%N7
{[5L96RH%
SP*JleQN
Fortran 'ZH<g8:=@
WRITE(*,10) (kQ.tsl
10 FORMAT('Hello, World!') (+LR u1z
STOP qH
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END ^:!(jiH
@xm~T|[7
{!1n5a3" 1
HTML g!p_c
<HTML> G;HlII9x[
<HEAD> 2c~?UK[1
<TITLE> Hello World! </TITLE> A>t!/_"
</HEAD> zI&4k..4
<BODY> zQ5jx5B":
<p>Hello World!</p> O;0<^M/0G
</BODY> H='9zqYZ<W
</HTML> GHJ=-9{YL
6L2*gO:r?
NhK(HTsvK
HQ9+ !)/iRw9re
H "YzTMKu
<W51 oO
^q&wITGI
INTERCAL )fMX!#KP
PLEASE DO ,1 <- #13 \U*-w:+@
DO ,1 SUB #1 <- #238 `Kc %S^C'
DO ,1 SUB #2 <- #112 [Ht."VxR
DO ,1 SUB #3 <- #112 FPMSaN P
DO ,1 SUB #4 <- #0 2 Z`$
DO ,1 SUB #5 <- #64 UW/3{2
DO ,1 SUB #6 <- #238 Ac!&j=ZE
DO ,1 SUB #7 <- #26 +%#MrNM'
DO ,1 SUB #8 <- #248 \8*,&ak%
DO ,1 SUB #9 <- #168 ,AbKxT
f2
DO ,1 SUB #10 <- #24 0"^oTmQN
DO ,1 SUB #11 <- #16 9U<)_E<y
DO ,1 SUB #12 <- #158 SZ2q}[o`R
DO ,1 SUB #13 <- #52 }C{}oLz
PLEASE READ OUT ,1 Q)6wkY+!
PLEASE GIVE UP }1]!#yMfq
OgXZ-<'
Iq0 #A5U%
Java 9{%g-u\
public class Hello -hVv
{ 'hlB;z|T
public static void main(String[] args) c_G-R+
{ bN4&\d*u#
System.out.println("Hello, world!"); 7 xp1\j0
} )YnI!v2T
} @x=BJuUuX
bmO__1
3KG) 6)1*
JSP E7yf[/it
<% N^Hn9n
out.print("Hello, world!"); B)*#g
%> }&(E#*>x
h#@4@x{
QBfhyo_
MIXAL 64!ame}n+
TERM EQU 19 the MIX console device number W\>^[c/
ORIG 1000 start address HhWwc#B
START OUT MSG(TERM) output data at address MSG ?|">),
HLT halt execution }+dM1 O
MSG ALF "MIXAL" O&3r*vd
ALF " HELL" A )RI:?+
ALF "O WOR" X&9^&U=e
ALF "LD " b>bgUDq
END START end of the program uq|vNLW26
Lov.E3S6;
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Nuva miG;]-"^
<..直接输出..> -; us12SZ
Hello, world! z^P* :
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<..或者..> {(M&-~Yh
Lz9$,Y[
<. K#l
-?
// 不带换行 5DkK'tCI9Z
? "Hello, world!" )4!CR /ao
zL)1^[%O9
// 或者 lTV@b&
Iuu<2#gb8"
// 带换行 4T==A#Z
?? 'Hello, world!' uG=t?C6
.> sd]54&3A
3^02fy
&?/N}g@K
OCaml +QIGR'3u
let main () = ;z.6'EYMG
print_endline "Hello world!";; :$M9XZ~\
V6@*\+:3)
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Pascal `qf\3JT\
program Hello; p|h.@do4
begin GhG%>U#&a
writeln('Hello, world!'); &547`*
end. [!J
@a
Q?
<-`7
&TP:yA[
Perl ch0oFc$
#!/usr/local/bin/perl :(bdI]
print "Hello, world!\n"; 3 {NaZIk
DA+A >5/
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(&"
PHP n0+g]|a
AF
<?php g[#k.CuP
print("Hello, world!"); 'DCKD4@C/
?> }b_R5U$@@
c!\.[2n
jw/'*e
Pike <=;H[}
e
#!/usr/local/bin/pike ,]~u:Y}
int main() bGZhUEq
{ C1X}3bB
write("Hello, world!\n"); d98))G~W
return 0; r/mA2
} a&$Zpf!!
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