“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。 4yRT!k}o
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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》。 M/UJb1<
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以下是用不同语言写成的Hello World程序的几个例子: @|-ydm0
Ada /^#}
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with Ada.Text_Io; use Ada.Text_Io; @Z3b^G[
procedure Hello is YXV![gw0
begin #\`6ZHW
Put_Line ("Hello, world!"); ? ~_%I
end Hello; K\?vTgc(
#7Qn\C2
3D<P
[.bS
汇编语言 )x( *T
AqN(htGvx
x86 CPU,DOS,TASM `awk@
MODEL SMALL 5fVdtJk7
IDEAL o"[qPZd>
STACK 100H &2QN^)q
xg3G
DATASEG ge[\%
HW DB 'Hello, world!$' vtL)
>St
CODESEG 6 _73
MOV AX, @data bE0S)b)
MOV DS, AX @Chj0wWZ>
MOV DX, OFFSET HW |nm,5gPNC
MOV AH, 09H &mY<e4
INT 21H Q|pz].0
MOV AX, 4C00H (%I`EAR
INT 21H D.?KgOZ
END bz}T}nj
Qz<v. _
j5$Sm
x86 CPU,GNU/Linux,NASM
3FNj~=N
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). eQC`e#%
;Enter this into "hello.asm" then type: &,e@pv c3
;"nasm -f elf hello.asm" >@rp]xx
;"ld hello.o -o hello" c-s ~q/
;"./hello" qPzgGbmD9
\f
section .data ;data section declaration 2OK%eVba
msg db 'Hello World!',0AH u9VJ{F
len equ $-msg ;string length ^-=,q.[7
T[<9Ty'^
section .text ;code section declaration ,Hj=]e2?
global _start ;entry point (start of execution) ,Zs-<e"
_start: mov edx,len ;string length Qz/=+A/4
mov ecx,msg ;string start 1lMU('r%
mov ebx,1 ;file handle: stdout noL<pkks~R
mov eax,4 ;sys_write 2+ 9">a@
int 80h ;kernel system call ;itz`9T
d]a*)m&
mov ebx,0 ;return value s6KZV@1
mov eax,1 ;sys_exit ?rr%uXQjH
int 80h ;kernel system call %Xp}d5-
K3\U'bRO
[m('Y0fwO^
x86 CPU,Windows,MASM32 &4BN9`|:
.386 8[zP2L!-
.model flat,stdcall ]2Lwd@
option casemap:none u^:!!Suo
;Include 文件定义 \UN7lDH
include windows.inc 3 YRhqp"E
include user32.inc nP_ s+k
includelib user32.lib 2;6p2GNSh
include kernel32.inc +gT?{;3[i
includelib kernel32.lib <4(rY9
;数据段 B23R9.FK
.data w"A'uFXLc
szCaption db 'A MessageBox!',0 W~ DY-;
szText db 'Hello,world!',0 SDJAk&Z}R
;代码段 x~Pv
.code =DF7l<&km
start: }HXNhv-K
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 4d6F4G4U
invoke ExitProcess,NULL v\f 41M7D
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> HfmTk5|/
end start X"'}1o
Oja)J-QXb
&a-:ZA@
AWK WFLT[j!1
BEGIN { print "Hello, world!" } I_eYTy-a`1
cV)C:!W2
6C) G
BASIC 5H?`a7q N
传统版BASIC(例如GWBASIC): TQbhK^]
!XgkK k
10 PRINT "Hello, world!" 9I9J}&4
20 END g^8bY=*
.
:^?ZVi59j
或在提示符输入: 9j9A'Y9(
[O(78n$$
?"Hello, world!":END 8[}MXMRdb
^=Up UB
现代版BASIC(例如Quick BASIC): {v~&.|
J;'?(xO3\
Print "Hello, world!" }^P( p?~
H}JH339
以下的语句在Quick BASIC中同样有效: 3P'.)=}
lty`7(\
? "Hello,world!" E
jBEZL|_
"hpK8vQ
b^^Cj(
BCPL 8|V6Rg A%
GET "LIBHDR" Z]oa+W+
E}\^GNT
LET START () BE c9iCH~
$( $eRxCX?b2
WRITES ("Hello, world!*N") bIe>j*VPh@
$) gwR ^Z{
uXu'I
PS(9?rX#+
Befunge 1 dI
"!dlrow olleH">v ma?569Z8~0
, MdZ7Yep
^_@ ZK3?"|vhC
Y( D d7`c
p;BdzV>
Brainfuck ]#))#-&1
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< `;5UlkVZ5
+++++++++++++++.>.+++.------.--------.>+.>. E{Y0TZ+
18V*Cu
;z)$wH0xc
C 0O"GI33Mg
#include <stdio.h> Yy>%dL
D@5&xd_@4
int main(void) Mz+|~'R
{ g|e^}voRM
printf("Hello, world!\n"); GAtK1%nPD
return 0; 7Cp>i WV
} ANp4yy+
x-CYG?-x
(!DH'2I[
C++ c*MjBAq
#include <iostream> !);}zW!
DTn=WGm)
int main() VH+^G)^) W
{ iN+p>3w^l
std::cout << "Hello, world!" << std::endl; pRUN[[L
return 0; "`C|;\w
} A{mbL2AxwC
l
yO_rZT
6<sB
C++/CLI u%VO'}Gz
int main() <74q]C
{ dSk\J[D
System::Console::WriteLine("Hello, world!"); ;oWh Tj`
} ^X"G~#v=q
;QREwT~H
yTkYPx
C# (C Sharp) |@Q(~[It
class HelloWorldApp @\u)k
{ </:f-J%U/
public static void Main() CHN!o9f
{ m5{Y
System.Console.WriteLine("Hello, world!"); ;=*b:y Y
} 6:ZqS~-
} ,'={/)c<
[$8*(d"F'
1fViW^l_
COBOL OtY.s\m y
IDENTIFICATION DIVISION. dZ`nv[]k~
PROGRAM-ID. HELLO-WORLD. 7{8!IcR #
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ENVIRONMENT DIVISION. aE1h0`OT
3(E"$Se,f
DATA DIVISION. "*kWM
QRgWzaI
PROCEDURE DIVISION. u?Iop/b
DISPLAY "Hello, world!". <kPU*P,
STOP RUN. ,Xo9gn
im*QaO%a4
J);1Tpm
Common Lisp 3`SLMPI
(format t "Hello world!~%") g]X4)e]
H8Pil H
]bhzB
DOS批处理 l
\xIGs
@echo off D@>P%k$$s>
echo "Hello, world!" &zb_8y,
}I;=IYrN
9 n|H%AC
Eiffel w_/q5]/V-5
class HELLO_WORLD s/`4]B;2U
O 4l[4,`
creation i.0}qS?
make h"#^0$f
feature HEht^/pJ
make is ,UH`l./3DX
local W%Br%VQJ
io:BASIC_IO ;G;vpl
do F 3,hx
!!io rM=Q.By+\
io.put_string("%N Hello, world!") v|t^th,
end -- make vRn^n
end -- class HELLO_WORLD ~"
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H.O7Y
6H.D`"cj
Erlang >6r&VZu*n
-module(hello). /LPSI^l!m
-export([hello_world/0]). hh
<=D.u
Zo-s_6uC
hello_world() -> io:fwrite("Hello, World!\n"). N$:[`,
~WR6rc
jW?.>(
Forth &P[eA u
." Hello, world!" CR G80d!*7
G?'L1g[lc
,)S|%tDW
Fortran tA}O'x
WRITE(*,10) FyZw='D
10 FORMAT('Hello, World!') &wK%p/?
STOP C1)TEkc"C
END Kn=P~,FaG3
oxH S7b
c5R58#XK=
HTML %CD}A%~
<HTML> G/N'8Q)
<HEAD> (!W:-|[K\
<TITLE> Hello World! </TITLE> 3~a!h3.f
</HEAD> ?J%$;"q
<BODY> oBifESJ
<p>Hello World!</p> VISNmz2P
</BODY> JV(|7Sk
</HTML> x_2
[+Ol
pWw aN4
x)THeH@
HQ9+ xo7H^!_
H wrac\.
"Z& {
1i$9x$4~E
INTERCAL +>44'M^Z|(
PLEASE DO ,1 <- #13 v&xk?F?WU,
DO ,1 SUB #1 <- #238 x AkM_<
DO ,1 SUB #2 <- #112 2Z\6xb|u
DO ,1 SUB #3 <- #112 ~ NKw}6
DO ,1 SUB #4 <- #0 -9.S?N'T>;
DO ,1 SUB #5 <- #64 8e[kE>tS._
DO ,1 SUB #6 <- #238 1EyM,$On
DO ,1 SUB #7 <- #26 m9wV#Ldu
DO ,1 SUB #8 <- #248 kbM 4v G
DO ,1 SUB #9 <- #168 CmY'[ rI
DO ,1 SUB #10 <- #24 VbKky1a@
DO ,1 SUB #11 <- #16 Ex&f}/F
DO ,1 SUB #12 <- #158 )l\BZndf
DO ,1 SUB #13 <- #52 l`[*b_
Xt
PLEASE READ OUT ,1 LXJ"ct
PLEASE GIVE UP PfF7*}P
YB*ZYpRVl
a4 O
Java CLdLO u"
public class Hello esLPJx
{ r*p<7
public static void main(String[] args) Pi40w+/
{ : \:jIP
System.out.println("Hello, world!"); 5owUQg,W
} !FA^~
} A+iQH1C0h
:@`Ll;G
iRPt0?$
JSP '<^%>R2
<% '2WYbcU
out.print("Hello, world!"); A@?2qX^4
%> u f.Zg;Vc
|F iL1_
/IxMRi=
MIXAL 38>8{Ma
TERM EQU 19 the MIX console device number ;k9s@e#a
ORIG 1000 start address k10dkBoEX
START OUT MSG(TERM) output data at address MSG yCf*ts1
HLT halt execution Hd
U1gV>
MSG ALF "MIXAL" "e&S*8QhM
ALF " HELL" !BIq>pO%Ui
ALF "O WOR" C8m8ys
ALF "LD " Y@c!\0e$
END START end of the program >dUnk)7
2w $o;zz1
LrX7WI
Nuva 6w0/;8(_m
<..直接输出..> [@eNb^R
Hello, world! KA0Ui,q3
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<..或者..> xm6=l".%z
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