“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。 h2;F
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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》。 Czu\RXJR
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以下是用不同语言写成的Hello World程序的几个例子: J!U}iD@occ
Ada S\!ana])
with Ada.Text_Io; use Ada.Text_Io; !H>R%g#28_
procedure Hello is M?uC%x+S$_
begin xAMW-eF?d
Put_Line ("Hello, world!"); r<Kx0`y
end Hello; 3HY9\'t6
O55 xS+3^k
!5uGd`^I
汇编语言 cJ
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M} v/tRI
x86 CPU,DOS,TASM Dy8r 9
MODEL SMALL Whf.fK
IDEAL tS8u
STACK 100H ?o#%Xs
o"R7,N0rB
DATASEG LW_f
HW DB 'Hello, world!$' MfQ?W`Kop
)iK6:s#
CODESEG pOG1jI5<{8
MOV AX, @data 2'MZ s]??w
MOV DS, AX Ffta](Z;
MOV DX, OFFSET HW ,>+p-M8ZL
MOV AH, 09H WKa~[j|-K
INT 21H R/>@+
MOV AX, 4C00H PxkOT*
INT 21H GD_hhDyD
END 2{G:=U
b |p)9&^r
|T)6yDL
x86 CPU,GNU/Linux,NASM o.\F.C$
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). t"'7m^j
;Enter this into "hello.asm" then type: LsS
;"nasm -f elf hello.asm" R2]Z kg
;"ld hello.o -o hello" k%QpegN
;"./hello" l u%}h7ng
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section .data ;data section declaration &t:Gx<]
msg db 'Hello World!',0AH FNY8tv*/x
len equ $-msg ;string length b9<#K+L-
t$#jL5
section .text ;code section declaration vJOw]cwq
global _start ;entry point (start of execution) XtSkh] #z!
_start: mov edx,len ;string length uurh??R
mov ecx,msg ;string start !6>~?gNd
mov ebx,1 ;file handle: stdout Hm'=aff6A
mov eax,4 ;sys_write \WB<86+z
int 80h ;kernel system call =\:qo'l
s?,Ek
mov ebx,0 ;return value {vyv7L
mov eax,1 ;sys_exit $Kncvu
int 80h ;kernel system call Zu("#cA.H
xx9 g''Q
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x86 CPU,Windows,MASM32 KRMQtgahc
.386 OCaq3_#tZ
.model flat,stdcall x%!s:LVX
option casemap:none f-G:uI_
;Include 文件定义 h2J/c#Qvh
include windows.inc 8~z~_TD6m@
include user32.inc 6){]1h"
includelib user32.lib e-#BDN(O
include kernel32.inc nWYN Np?h
includelib kernel32.lib E`de7
;数据段 n'kG] Q
.data =Bhe'.]QSx
szCaption db 'A MessageBox!',0 fd<:_f]v
szText db 'Hello,world!',0 'yG4
LF
;代码段 o{q{!7DH@
.code .ndCfdy~
start: ?3zc=J"t
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK \Vy Z
invoke ExitProcess,NULL "8^
Ch{G-
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> v)t:|Q{I
end start OJ5#4qJ[
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r@t9Ci=}
AWK Mh/dpb\Z
BEGIN { print "Hello, world!" } ,*hLFaR-
Q1
$^v0-)
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BASIC @l jA
传统版BASIC(例如GWBASIC): _ff`y
nR}sNl1
10 PRINT "Hello, world!" 5l 2 ?
20 END IIF]/Ek]
se>8 Z4
或在提示符输入: Cdu4U}^H
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?"Hello, world!":END q?DTMKx
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现代版BASIC(例如Quick BASIC): 'o+L41
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Print "Hello, world!" }v!$dr,j'
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以下的语句在Quick BASIC中同样有效: W~~7C,!
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? "Hello,world!" W=Mb
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6S*exw
BCPL ?DQsc9y
GET "LIBHDR" 2s&*
J^}V|#
LET START () BE +)<wDDC_
$( wKYZa# u
WRITES ("Hello, world!*N") KB`!Sj\
$) n%C>E.Tq
NS%xTLow-
I E&!YP(U(
Befunge Vp*KfS]
"!dlrow olleH">v F6OpN"UM'
, m)v"3ib
^_@ Nj
xoTLI
Ba*,-i3ZK
)ufg9"\
Brainfuck luuX2Mx>o
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< "2P&X
+++++++++++++++.>.+++.------.--------.>+.>. WEQ1 Seq
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C ;":zkb{
#include <stdio.h> */|lJm'R
5JCG2jqx0
int main(void) (\a]"g,]v
{ W<$Z=(_v
printf("Hello, world!\n"); Iw&vTU=2
return 0; {fF3/tL
} k*E\B@W>
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iH@yCNE"
C++ VsgE!/>1
#include <iostream> qY<'<T4\
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int main() !2A:"2Kys:
{ +!z{5:
std::cout << "Hello, world!" << std::endl; RIXMJ7e7
return 0; RHq/JD-
} Z!@~>i
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0]=i}wL 8
C++/CLI WZ7BoDa7O
int main() 3'qJ/*]9
{ -/cZeQDPb
System::Console::WriteLine("Hello, world!"); ##;Er47@^
} 65p?Igb
#H{<gjs]
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C# (C Sharp) Y/ee~^YxK'
class HelloWorldApp "
'6;/N
{ qT"Q1xU[
public static void Main() Bck7\
{ m~Bl*`~M
System.Console.WriteLine("Hello, world!"); }L3 oR
} ]Nl=wZ#`
} 2viM)+
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COBOL x2z;6)
IDENTIFICATION DIVISION. W$rH"_@m
PROGRAM-ID. HELLO-WORLD. X4t s)>"d
;A'Z4=*~
ENVIRONMENT DIVISION. 2
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I8<,U!$
DATA DIVISION. !+4cqO
079'(%
PROCEDURE DIVISION. H(2]7dRS%
DISPLAY "Hello, world!". Xn,v]$M!
STOP RUN. \X&H;xnC5
w{uuSe
T2 Y,U {
Common Lisp gO,25::")
(format t "Hello world!~%") xY U.D+RY
2fS[J'-o
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)0.#
DOS批处理 IS[thbzkZ
@echo off ./D$dbu3
echo "Hello, world!" IlE_@gS8
UkHY[M7;
rEv*)W
Eiffel r8&^>4
class HELLO_WORLD OD 3f.fT
On@<J&%
creation 4RV%Z!kcD!
make *
Y7jl#7
feature
`|#Qx3n%
make is RE=+Dz{
local B`o]*"xkB
io:BASIC_IO 0i|oYaC
do rBTeb0i?
!!io C2xL1`
io.put_string("%N Hello, world!") )+"'oY$]}
end -- make WN5`;{\
end -- class HELLO_WORLD bi&*9K0
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A"l?:?rtw]
Erlang r"a5(Q;n
-module(hello). dT$M y`>
-export([hello_world/0]). f1)x5N
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hello_world() -> io:fwrite("Hello, World!\n"). D8nD/||;Z
5qkH|*Z3
jfx8EbQ
Forth g'u?Rn7*J
." Hello, world!" CR <[J[idY1he
-,aeM~
RQp|T5Er*
Fortran B Ma)O
WRITE(*,10) 7kK #\dI
10 FORMAT('Hello, World!') ~+bGN
STOP +:-57
END ^1x*lLf
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M- 2Tz[
HTML ls `,EFF
<HTML> +|{RE.DL
<HEAD> #E+gXan
<TITLE> Hello World! </TITLE> o|iYd
n\
</HEAD> c8M2 ^{O,`
<BODY> -:9P%jWt
<p>Hello World!</p> ww{_c]My
</BODY> W$o27f
</HTML> NU\
5{N<
#9fWAF
sv(f;ib
HQ9+ _#s=h_
FD
H
uV hCxUMQ
ZBG}3Z
G633Lm`ri
INTERCAL ;HBCUe<_
PLEASE DO ,1 <- #13 M9f?q.Bv
DO ,1 SUB #1 <- #238 16EVl~LN
DO ,1 SUB #2 <- #112 Ty@=yA17
DO ,1 SUB #3 <- #112 ,j ',x\
DO ,1 SUB #4 <- #0 ).HDru-2
DO ,1 SUB #5 <- #64 *tX{MSYW
DO ,1 SUB #6 <- #238 9Sq%s&
DO ,1 SUB #7 <- #26 5P hX"7
DO ,1 SUB #8 <- #248 <U9/InN0[
DO ,1 SUB #9 <- #168 EQIo5
DO ,1 SUB #10 <- #24 {"H2 :-t<
DO ,1 SUB #11 <- #16 1?Aga,~k:a
DO ,1 SUB #12 <- #158 ph|ZG6:
DO ,1 SUB #13 <- #52 (zYy}g#n
PLEASE READ OUT ,1 ]:$
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PLEASE GIVE UP L~/qGDXC?
qxMnp}O
!epgTN
Java HXVBb%pP
public class Hello L]hXpt
{ W*:,m8wk
public static void main(String[] args) LFp]7Dq
{ desThnTw
System.out.println("Hello, world!"); ,kp\(X[J
} 4^'3&vu
} m&oi8 P-6
x/MZ(A%D
^D_/=4rz8
JSP *Sf-;U
<% <n\`d
out.print("Hello, world!"); )g@S%Yu
%> l0Ti Z
rba;&D;
v !Kw<
fp|
MIXAL 1fL<&G
TERM EQU 19 the MIX console device number tAFti+Qb
ORIG 1000 start address ZDYJhJ.
START OUT MSG(TERM) output data at address MSG '69ZdP/xX
HLT halt execution tNmy&
nsA
MSG ALF "MIXAL" !sA_?2$
ALF " HELL" yWHiw<
ALF "O WOR" Zx?b<"k
ALF "LD " 6ZqgY1
END START end of the program
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cM &'[CI
HT_TP q
Nuva Y/8K;U|
<..直接输出..> [$(R#tZ+
Hello, world! cQZ652F9
n1:v HBM@\
<..或者..> 6vf\R*D|A
i"^<CR@e
<. ;;gK@?hJ
// 不带换行 c| '
w
? "Hello, world!" }GnwY97
gCVryB@z2
// 或者 Y"eEkT\
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// 带换行 QI!i
?? 'Hello, world!' #S+Z$DQD
.> L8vOB I7N
-#A:`/22
4`2$_T$F
OCaml P8gXCX!>U
let main () = gKb0)4 AK
print_endline "Hello world!";; 88a<{5
:z
~%|G+m>
xQlT%X;'
Pascal H.J5i~s
program Hello; ?&h3P8
begin =ziy`#fm,
writeln('Hello, world!'); *R`MMm
end. yNJAWM7
a~^Srj!}x
=O{~Q3z@s
Perl 'CS.p!Z\
#!/usr/local/bin/perl NyI;v=
print "Hello, world!\n"; c! H 9yk
Dd2Lx&9
m<3v)R[>
PHP /k7wwZiY@
<?php 5y_"
print("Hello, world!"); 2N6=8Xy5K
?> /'>;JF
.)8
l@d
gJ
Pike `:-J+<`
#!/usr/local/bin/pike 1 2]fQkp
int main() nY) .|\|i
{ de-0?6
write("Hello, world!\n"); 8tWE=8<
return 0; ~%q7Vmk9
} |r~
uos
iM64,wnA
.:;fAJPf
PL/I %7`d/dgR
Test: procedure options(main); Wm6dQQ;Bj
declare My_String char(20) varying initialize('Hello, world!'); )hL^+Nn bR
put skip list(My_String); !J.rM5K
end Test; d0C8*ifFO
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9Nl*4
Prolog U
%:c],Fk
goal S[@6Lp3q_
write("hello,world!"). 9 |K*G~J
':;LrTc'K
Ww87
Python q?VVYZXP
#!/usr/local/bin/python y=o=1(
print "Hello, world!" JY4_v>Aob
*=^[VV!
oa9)Dv
REXX YbvX$/zGu
say "Hello, world!" 5|WOBOh>`&
ofEqvoi@
{qAu/ixp
Ruby tvWH04T
#!/usr/bin/ruby `QCD$=
print "Hello, world!\n" p6blD-v
!=M/j}
2v|qLfe1
Scheme rZ866\0
(display "Hello, world!") Kpu<rKP`
(newline) 4 ROWz
(/q}mB
)b9I@)C
sed (需要至少一行输入) Rk[8Bd?
sed -ne '1s/.*/Hello, world!/p' iH _"W+dq
*7vue"I*Z
^X;JT=r
Smalltalk U3q5^{0d/
Transcript show: 'Hello, world!' byj[u!{
z`9l<Q/
'O1.6*K
SNOBOL )n7)}xy#z
OUTPUT = "Hello, world!" j];1"50?
END `t\z
pFH?/D/q
I;iR(Hf)?q
SQL lWl-@*'
create table MESSAGE (TEXT char(15)); ?HxS)Pqq
insert into MESSAGE (TEXT) values ('Hello, world!'); [xS5z1;
select TEXT from MESSAGE; 5k`e^ARf
drop table MESSAGE; s#Q_Gu
LsotgQ8
F0: &>'}
Tcl bG1 ofsU
#!/usr/local/bin/tcl d:$G|<