“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。 .hd<,\nW
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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》。 9U$n;uA
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以下是用不同语言写成的Hello World程序的几个例子: `3GC}u>}
Ada vF,\{sgW
with Ada.Text_Io; use Ada.Text_Io; B]jN~CO?
procedure Hello is WB~
^R<g
begin ,QU2xw D[
Put_Line ("Hello, world!"); S^ij %
end Hello; ZtG5vdf
94Wf ]
rN* ,U\q
汇编语言 H%2Y8}
aM/sD=}
x86 CPU,DOS,TASM B^`'2$3
MODEL SMALL jF4h/((|EU
IDEAL nW?DlECo?
STACK 100H T
<J%|d .'
(9R;a np
DATASEG ~{MmUp rS
HW DB 'Hello, world!$' u7R:7$H
l{OU\
CODESEG Hp`Mp)1s
MOV AX, @data 9;,_Qq
MOV DS, AX E5@U~|V[
MOV DX, OFFSET HW g_{hB5N](7
MOV AH, 09H Ewg5s?2|
INT 21H A#t#c*
MOV AX, 4C00H ,jVj9m
INT 21H =pHWqGOD
END p<hV7x-{
'U=D6X%V9m
A'(v]w
x86 CPU,GNU/Linux,NASM ^]Mlkd:
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). }ti+tM*
;Enter this into "hello.asm" then type: Z[+H$ =$%
;"nasm -f elf hello.asm" eyPh^c]?`8
;"ld hello.o -o hello" gHCk;dmq81
;"./hello" oB$7m4xO\
-?)` OHc^
section .data ;data section declaration w
s(9@
msg db 'Hello World!',0AH @mM])V
len equ $-msg ;string length OFS` ?>
|%6zhkoufM
section .text ;code section declaration h ]'VAt
global _start ;entry point (start of execution) CH
h]v.V
_start: mov edx,len ;string length Ga
o(3Y
mov ecx,msg ;string start /y2upu*!
mov ebx,1 ;file handle: stdout P\#z[TuHKC
mov eax,4 ;sys_write ) {=2td$=$
int 80h ;kernel system call Q)pm3Wi
Gp6|0:2,L~
mov ebx,0 ;return value NUB 3L
mov eax,1 ;sys_exit yj]\%3o<Z7
int 80h ;kernel system call c o}o$}
4.@gV/U(|
I^'U_"vB
x86 CPU,Windows,MASM32 N[G<&f9
.386 8p3pw=p
.model flat,stdcall 8!e1T,:b
option casemap:none `a.1Af;L
;Include 文件定义 ~i&Lc7Xl
include windows.inc E2f9J{Ki=
include user32.inc ?<@yo&)
includelib user32.lib bY6y)l
include kernel32.inc 5~WMb6/
includelib kernel32.lib t-#Y6U}b+
;数据段 \W73W_P&g
.data H}KJd5A7
szCaption db 'A MessageBox!',0 !wl3}]q
szText db 'Hello,world!',0 (bP\_F5D
;代码段 e%#8]$
.code Q<]~>cd^
start: DkO>?n:-C
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK <&&xt
?I.
invoke ExitProcess,NULL nr/^HjMV
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> m*VM1k V
end start 1EW-%GQO
S&BJR!FQ
]@@3]
AWK v 6{qKpU#
BEGIN { print "Hello, world!" } UnjUA!v
ti`R
(^h47kY
BASIC B@wQ[
传统版BASIC(例如GWBASIC): ;D5B$ @W>
J('p'SlI
10 PRINT "Hello, world!" r{m"E^K,
20 END R!7emc0T
wg? :jK
或在提示符输入: V+A1O k)
A]nDI:pO|
?"Hello, world!":END ,O=@I
5S:&^ A<
现代版BASIC(例如Quick BASIC): M5OH-'
Q!DQ!;Br6
Print "Hello, world!" m4:b?[
-B\`O*Q
以下的语句在Quick BASIC中同样有效: @nN+F,phx
h 9V9.'
? "Hello,world!" #+Lo&%p#3
h#bpog
1a{~B#
BCPL "yMr\jt~-
GET "LIBHDR" 6"Tr$E
p-U'5<n
LET START () BE Xg#g`m%(M
$( ~mUP!f
WRITES ("Hello, world!*N") ,wmPK;j
$) `m5cU*@D
htg+V-,
rn1FCJ<;H
Befunge ?5m[Qc(<
"!dlrow olleH">v '{EBK
, A0*u(15%
^_@ ]2Aqqy
'Mjbvh4
Kb%j;y
Brainfuck YW"?Fy
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ;8sEE?C$g
+++++++++++++++.>.+++.------.--------.>+.>. o?P(Fuf
hB:R8Y^?H
Fs:l"5~>1
C _:om(gL
#include <stdio.h> zk]6|i$!I
(,\`?g
int main(void) di6A.N5A
{ s#sr1[9}G
printf("Hello, world!\n"); F0Xv84:O
return 0; .a:Oj3=0
} B\bIMjXV
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<PkDfMx2
C++ )_EQU8D4ug
#include <iostream> Uc
e#v)
`xbk)oW#
int main() EAFKf*K=
{ /= P!9d
{
std::cout << "Hello, world!" << std::endl; <R~(6krJwZ
return 0; ,<zZKR_
} C<A82u;t%@
\@4QG.3&
zqYfgV
C++/CLI Cg
85
int main() o
<LA2q`T
{ ~I/7{B|yX
System::Console::WriteLine("Hello, world!"); Bd m<<<
} n[WXIE<
pCf-W/v
[AR$Sw60
C# (C Sharp) X %,;IW]a
class HelloWorldApp URR|Q!D
{ BU:s&+LYUv
public static void Main() nngL,-v#F
{ s@o"V >t
System.Console.WriteLine("Hello, world!"); C%#C|X193
} Xu HJy
} n*D)RiW
Uk ?V7?&
oTOe(5N8a
COBOL ~;m~)D
IDENTIFICATION DIVISION. W5:S+
PROGRAM-ID. HELLO-WORLD. _?Jm.nT
!0`ZK-nA6
ENVIRONMENT DIVISION. NLb/Bja
) !ZA.sx
DATA DIVISION. R|!4Y`
w_eu@R:u@
PROCEDURE DIVISION. CNcH)2Mk
DISPLAY "Hello, world!". 0e8)*2S
STOP RUN. & A9psc(,&
_F^|n}Qbj
6@o_MtI
Common Lisp Jb $PlOQ
(format t "Hello world!~%") OAw/
Q*$x!q
/[nt=#+
DOS批处理 J+?xfg
@echo off \ox:/-[c\<
echo "Hello, world!" C& Nd|c
a((5_8SX5
2T?t[;-
Eiffel u[ 2R>=
class HELLO_WORLD @b!fs
v-G(bw3
creation jy@}$g{
make pSq\3Hp]Q
feature aDza"Ln
make is 94nvh:n
local Xg!Mc<wA[
io:BASIC_IO >YoK?e6
do u#=N8
!!io "cJ5Fd:*
io.put_string("%N Hello, world!") Vzbl*Zmx
end -- make @292;qi
end -- class HELLO_WORLD Y/Y746I
lt0(Kf g
i8HSYA
Erlang ~,':PUkiV
-module(hello). "P<~bw5
-export([hello_world/0]). &B3\;|\
,{z$M
hello_world() -> io:fwrite("Hello, World!\n"). >wcsJ{I
F w{8MQ2
Zb2 B5(0
Forth SCxzT}#J
." Hello, world!" CR MzK&Jh
Vg[U4,
9lTA/-
Fortran 7Oxvq^[
WRITE(*,10) _IpW&
10 FORMAT('Hello, World!') (2qo9j"j/Y
STOP HTx7._b
END ]]%C\Ryy}
0TA/ExJ-LT
!2&h=;i~V
HTML
k7y!!AV
<HTML> 62vz 'b
<HEAD> JI\u -+BE
<TITLE> Hello World! </TITLE> sMO3eNLn
</HEAD> f "Iv
<BODY> M;Vx[s,#,
<p>Hello World!</p> \mc~w4B[)3
</BODY> &5d>jEaB}
</HTML> H`@x5RjS
miN(a; Q2P
i@B5B2
HQ9+ a+]=3o
H ITbl%q
k,v.U8
p3x(:=
INTERCAL ?6j@EJ<2q
PLEASE DO ,1 <- #13 $g|g}>Sc
DO ,1 SUB #1 <- #238 QT%&vq
DO ,1 SUB #2 <- #112 &]z2=\^e
DO ,1 SUB #3 <- #112 |u;5|i
DO ,1 SUB #4 <- #0 V<nzThM\
DO ,1 SUB #5 <- #64 Zqam Iq
DO ,1 SUB #6 <- #238 R!$j_H
DO ,1 SUB #7 <- #26 R~Xl(O
DO ,1 SUB #8 <- #248 /Zv }u
DO ,1 SUB #9 <- #168 VCc4nn#
DO ,1 SUB #10 <- #24 _'j>xK
DO ,1 SUB #11 <- #16 A H#e>kU^
DO ,1 SUB #12 <- #158 };zF&
DO ,1 SUB #13 <- #52 * 5P/&*c|
PLEASE READ OUT ,1 t9P` nfY
PLEASE GIVE UP @$(4;ar
@&M$`b
^
hZzsZQ`
Java .2Rh_ful
public class Hello \-sDRW
{ $~ItT1k_
public static void main(String[] args) i!czI8
{ 80+"
x3r
System.out.println("Hello, world!"); W
BiBtU
} g?@(+\W
} QL\'pW5
}){hQt7
;\iQZ~
JSP lXz<jt@5
<% cIgFSwQ4
out.print("Hello, world!"); jJ?3z,h
%> LQ{4r1,u]
bq
~'jg^#
l_}c[bAUu
MIXAL c8}1-MKs_R
TERM EQU 19 the MIX console device number vk#xCggK
ORIG 1000 start address _wHqfj)
START OUT MSG(TERM) output data at address MSG 7CQ48LH]
HLT halt execution jliKMd<?
MSG ALF "MIXAL" Tp0Tce/
ALF " HELL" 92} ,A`=
ALF "O WOR" ZGp8$Y>r
ALF "LD " 7`WK1_rR\
END START end of the program IPT}JX'
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s}HTxY;
Nuva 8o4
vA,
<..直接输出..> v.Q)Obyn
Hello, world! +5T0]!
DsFrA]
<..或者..> =n#xnZ3
mY%PG
<. a!>AhOk.
// 不带换行 8\ :T*u3
? "Hello, world!" "kN5AeRg
q+m&V#FT%
// 或者 -i;#4@^ t
)T2Sw z/
// 带换行 khEHMvVH
?? 'Hello, world!' h<uRlTk
.> W~7q&||;C
u|w[b9^r
dch(HB}[
OCaml cPtP?)38.
let main () = hy6px
print_endline "Hello world!";; #FeM.k6
Mv;7kC7]
[(dAv7YbN
Pascal .UJDn^@
program Hello; |:EUh
begin 2=U4'C4#
writeln('Hello, world!'); CP={|]>+S
end. n7Re@'N<
&Wn!W
@h$7C<
Perl US
Q{o
#!/usr/local/bin/perl k-w._E
<
print "Hello, world!\n"; fM8 :Nt$
q|Ga
K@?S0KMK
PHP Z/2#h<zj
<?php 6t@3
a?
print("Hello, world!"); Xf Y]qQP
?> E7 7Au;TL
G2e m>W_n
Ejn19{
Pike *VL-b8'A<
#!/usr/local/bin/pike TT29LC@
int main() %3~jg
{ N b+zP[C
write("Hello, world!\n"); 1s1$J2LX
return 0; /)v X|qtIY
} \bfNki
XV!P8n
:]?I| .a
PL/I )C <sj
Test: procedure options(main); :x16N|z
declare My_String char(20) varying initialize('Hello, world!'); K{"+eA>CU
put skip list(My_String); `+i<:,z-gs
end Test; U${dWxC
&:Raf5G-E
/y
NU0/
Prolog 4S+P]U*jW
goal WJ/&Ag1
write("hello,world!"). HhIa=,VY
tn:tM5m
t*n!kXa
Python $ABW|r
#!/usr/local/bin/python r1t TY?
print "Hello, world!" c!6.D
HbV[L)zYG
k}JjSt1_A;
REXX B(E+2;!QF
say "Hello, world!" ^gD&Nb