“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。 .Ro/ioq
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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》。 Av X1*
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以下是用不同语言写成的Hello World程序的几个例子: XHr*Rs.[=
Ada w+M/VsL
with Ada.Text_Io; use Ada.Text_Io; {!"UBALxc
procedure Hello is *$tXm4
O[
begin 3<0b_b
Put_Line ("Hello, world!"); )DSeXS[
e
end Hello; (`x_MTLL
6#=jF[
*Rgr4-eS
汇编语言 H|9t5
Lkt4F
x86 CPU,DOS,TASM LU1I
`E
MODEL SMALL h<9s&
p
IDEAL jUe@xis<T
STACK 100H o2/:e
s\*L5{kiSl
DATASEG 4>JSZ6i#n
HW DB 'Hello, world!$' KkvcZs'4m
L4By5)
CODESEG o3J#hQrl
MOV AX, @data H;Wrcf2
MOV DS, AX O[@!1SKT0
MOV DX, OFFSET HW xQoZ[
MOV AH, 09H u?osX;'w
INT 21H L\:|95Yq
MOV AX, 4C00H VUb>{&F[
INT 21H q6zVu(
END 7CIN!vrC|1
/x VHd
@CprC]X
x86 CPU,GNU/Linux,NASM aukcO;oG<
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). tpfgUZ{
;Enter this into "hello.asm" then type: Z}W{ iD{
;"nasm -f elf hello.asm" fr17|#L+s
;"ld hello.o -o hello" ( }-*irSsj
;"./hello" 2g.lb&3W
_&<n'fK[
section .data ;data section declaration %I1@{>OxG
msg db 'Hello World!',0AH PmR].Ohzi
len equ $-msg ;string length inP2y ?j
mH o#"tc
section .text ;code section declaration ,7{|90'V<
global _start ;entry point (start of execution) u'YXI="(
_start: mov edx,len ;string length |z-f8$
mov ecx,msg ;string start Y:^hd809
mov ebx,1 ;file handle: stdout Hon2;-:]{]
mov eax,4 ;sys_write |'^s3i&w
int 80h ;kernel system call %iyc1]w{
1\}vU
mov ebx,0 ;return value FO!Td
mov eax,1 ;sys_exit A*JOp8\)
int 80h ;kernel system call 4TtC~#D:
3I)~;>meo
N*Y[[N(
x86 CPU,Windows,MASM32 K-qWT7<
.386 u]^s2v
.model flat,stdcall qeZG/\,
option casemap:none l:HQ@FX
;Include 文件定义 .OPknC
include windows.inc ``MO5${
include user32.inc 1d^~KBfv
includelib user32.lib oD)x\ )t8
include kernel32.inc uEPp%&D.+
includelib kernel32.lib rQ*+
<`R}
;数据段 (i
"TF2U,<
.data fSo8O
szCaption db 'A MessageBox!',0 19 5_1?'<
szText db 'Hello,world!',0 0'^M}&zCi
;代码段 Y}~sTuWU
.code >xWS>
start: -@v^. @[Z&
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK iZGbNN
invoke ExitProcess,NULL u 3WU0Z`
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> {X!vb
end start ) CGQ}
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`<XS5h
h=
AWK }%g[1
#%(
BEGIN { print "Hello, world!" } #S>N}<>
lhUGo =
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BASIC Gu;40)gm
传统版BASIC(例如GWBASIC): U/>I! 7oe
7HkO:/
10 PRINT "Hello, world!" TWP@\ BQ
20 END >AEp\*
D
T5d]MU
或在提示符输入: V@'Xj .ze
*G"hjc$L
?"Hello, world!":END X3:1KDVsV
"~r<ZG
现代版BASIC(例如Quick BASIC): t]xz7VQ
&3vm
@
Print "Hello, world!" > ,6
1[P}D~ nQ
以下的语句在Quick BASIC中同样有效: pa-*&p
D#GuF~-F!R
? "Hello,world!" R
iZ)FW
GT6; I7
j{C~wy!J
BCPL >+O0W)g{o
GET "LIBHDR" '}cSBbl&/n
:ez76oGyc
LET START () BE $z=a+t *
$( ~d*Q{v~3
WRITES ("Hello, world!*N") AD;m[u7
$) :Drf]D(sMX
b9g2mWL\T
Bg|d2,im
Befunge FSuC)Xg
"!dlrow olleH">v Fe8X@63
, 3M#x)cW
^_@ "&_+!TBg,
M$x,B#b
(Mv~0ShakO
Brainfuck GRc)3
2,
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<
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+++++++++++++++.>.+++.------.--------.>+.>. |
BaEv\$K
:tWkK$
&dB@n15'A
C xM())Z|2
#include <stdio.h> "rdpA[>L
FM]clC;X?
int main(void) +|C@B`h
{ :6n4i$
printf("Hello, world!\n"); VgPlIIHh5
return 0; %[XP}L$
} &XNt/bK-?
FQek+[ox
uc9h}QJ*
C++ 9>{fsy
#include <iostream> `;mgJD
m%9Yo%l~
int main() _DR@P(0>_
{ 7 [e-3
std::cout << "Hello, world!" << std::endl; NSVE3
return 0; A6z2KVk
} W@!qp
1
-Z&/3T]
O0}uY:B
C++/CLI 7\@c1e*e
int main() IlJ"t`Z9)
{ :1d;jx>
System::Console::WriteLine("Hello, world!"); <gPM/4$G
} k7uX!}
~,,r\Y+
L IKuK#
C# (C Sharp) [C!*7h
class HelloWorldApp "Lvk?k
)hx
{ E}Cz(5
public static void Main() [kJ;Uxncz~
{ zE;|MU@|
System.Console.WriteLine("Hello, world!"); BMq> Cj+
} "yymnIQ3u
} Q 1i5"'][
?C CQm
cO:lpsKYQ
COBOL ;9~YQW@|
IDENTIFICATION DIVISION. 0L;,\&*u
PROGRAM-ID. HELLO-WORLD. *mV?_4!,f7
[__P-h{J
ENVIRONMENT DIVISION. Fs>MFj
V 2Xv)
DATA DIVISION. Zl[EpXlZ
U_jW5mgsG
PROCEDURE DIVISION. Mn5(Kw?o2J
DISPLAY "Hello, world!". yR5XcPoKI
STOP RUN. }
e w{WD
,`U>BBBLv
/$93#$
Common Lisp 7!qeIz
(format t "Hello world!~%") a<*+rGI
'*[7O2\%/
5NkF_&S_1
DOS批处理 eP (*.
@echo off q AVypP?J
echo "Hello, world!" 8K^#$,.."
xlcCL?qQj
-qpvVLR,
Eiffel I!b"Rv=Nf-
class HELLO_WORLD ju:}%'
kM-8%a2i
creation vEjf|-Mb9
make )4o8SF7lz
feature |`yU \
make is DK2Wjr;
local .|"E:qTD
io:BASIC_IO ,&Zp^
do =ZSYg K
!!io .NWsr*Tel
io.put_string("%N Hello, world!") mR2"dq;U
end -- make 'RwfW|~6
end -- class HELLO_WORLD Q?hf2iw
%#fjtbeB
ka=A:biz
Erlang 1/bTwzR.g
-module(hello). &R/-~w5
-export([hello_world/0]). Jj%xLv%
};rEN`L
hello_world() -> io:fwrite("Hello, World!\n"). gWro])3
m,+E5^
K}q5,P(
Forth },<Y
\
." Hello, world!" CR l_((3e[)
n[BYBg1yG
lB_4jc
Fortran nzO-\`40
WRITE(*,10) Mg0ai6KD
10 FORMAT('Hello, World!') f:nXE&X[
STOP UQ hD8Z'I.
END b4$g$()
1A93ol=
MF$Dx| Tcj
HTML 'oGMr=gp<&
<HTML> a^G>|+8
<HEAD> .`*(#9(M9
<TITLE> Hello World! </TITLE> )%9:k9
</HEAD> H [M:iV
<BODY> E690'\)31
<p>Hello World!</p> 3 p -SpUvp
</BODY> .: wg@Z
</HTML> rD6NUS
cEXd#TlY~X
<`q-#-V@
HQ9+ w3iX "w
H n\7>_
I(>_as\1
-0'<7FSQ
INTERCAL >y}> 5kv
PLEASE DO ,1 <- #13 7u1o>a%9
DO ,1 SUB #1 <- #238 hQ)?LPUB
DO ,1 SUB #2 <- #112 Yjy%MR
DO ,1 SUB #3 <- #112 |Eu#mN
DO ,1 SUB #4 <- #0 Q(WfWifu-|
DO ,1 SUB #5 <- #64 )-6>!6hZ
DO ,1 SUB #6 <- #238 SXXO#
DO ,1 SUB #7 <- #26 \HMuVg'Q
DO ,1 SUB #8 <- #248 pcd?6jh8
DO ,1 SUB #9 <- #168 V[8!ymi0
DO ,1 SUB #10 <- #24 lh\`9F:
DO ,1 SUB #11 <- #16 uI)z4Z
DO ,1 SUB #12 <- #158 +CQIm!Sp
DO ,1 SUB #13 <- #52 #BEXj<m+J
PLEASE READ OUT ,1 K-(C5 "j_
PLEASE GIVE UP =%77~q-HL
eHHU2^I,
rWL&-AZQl
Java u3 X!O
public class Hello .^- I<4 .
{ .lgm"
public static void main(String[] args)
*yg`V,C
{ OK@yMGz1I
System.out.println("Hello, world!"); 5n::]Q%=D
} M6[O>z
} j<?k$8H
3E @ &
[8b{Ybaz
JSP ZSwhI@|
<% 25vq#sS]
out.print("Hello, world!"); m9 'bDyyK
%> ^MWp{E
mphs^k< Z
1<]?@[l<
MIXAL 7*+tG7I @
TERM EQU 19 the MIX console device number JFRbWQ0
ORIG 1000 start address U
d+6=Us{
START OUT MSG(TERM) output data at address MSG U,<?]h
HLT halt execution ![[:Z
MSG ALF "MIXAL" -ADb5-px
ALF " HELL" Q9g^'a
ALF "O WOR" BgsU:eKe
ALF "LD " ~:b5UIAk
END START end of the program uY&t9L8
'Urx83
e9F+R@8
Nuva ypvz&SzIh
<..直接输出..>
/p|L.&`U
Hello, world! BI>r'
L>`inrpz=w
<..或者..> q) e*eN
) Cm95,Y
<. {ZUgyGE{
// 不带换行 7%|HtBXv^
? "Hello, world!" X-yS9E
fHF*#
// 或者 u~'j?K.^
OV^?cA
// 带换行 tHJahK:"k
?? 'Hello, world!' ;3=RM\
.> ()_^:WQO?
xn<x/e
w\>@>*E>
OCaml Gbb*p+(
let main () = wemhP8!gc
print_endline "Hello world!";; |x ir93 |
KctbNMU]k
2 o5u02x
Pascal z7JhS|
program Hello; g|{Ru
begin uF@DJX}>
writeln('Hello, world!'); )9{!=k
end. D'
h%.
X$<CIZ
/,9n1|FrG
Perl AR)A <