“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。 ^/K\a
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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》。 *uR&d;vg.8
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以下是用不同语言写成的Hello World程序的几个例子: NiU}A$U
Ada _S:6;_bz
with Ada.Text_Io; use Ada.Text_Io; gWp\?La
procedure Hello is z`-?5-a]I
begin X{rw+!
Put_Line ("Hello, world!"); q!#e2Dx
end Hello; 2Mc/ah
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汇编语言 bWv4'Y!p
-If-c'"G
x86 CPU,DOS,TASM DSY:aD!
MODEL SMALL U^4
/rbQ
IDEAL mj0{Nd
STACK 100H N9r}nqCN
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DATASEG :.!]+#Me
HW DB 'Hello, world!$' 3 $;6pY
BM*9d%m^
CODESEG #LlHsY530N
MOV AX, @data >:M3!6H_~{
MOV DS, AX R}F0_.
MOV DX, OFFSET HW .op:
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MOV AH, 09H hkw;W[ZWa
INT 21H 3X$)cZQ
MOV AX, 4C00H .$+]N[-=
INT 21H ZCi~4&Z#
END I]P'wav~O
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u-Pa:wm0-
x86 CPU,GNU/Linux,NASM o.t$hv|
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). O"4Q=~Y
;Enter this into "hello.asm" then type: qG7^XO Ws-
;"nasm -f elf hello.asm" A87JPX#R?
;"ld hello.o -o hello" ud K)F$7
;"./hello" 'v^CA}
c[]_gUp8
section .data ;data section declaration bs!N~,6h
msg db 'Hello World!',0AH 5uMh#dm^
len equ $-msg ;string length v_f8zk
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section .text ;code section declaration _aVrQ@9
global _start ;entry point (start of execution) F)/}Q[o8
_start: mov edx,len ;string length JqTkNKi/s
mov ecx,msg ;string start &P&LjHFK
mov ebx,1 ;file handle: stdout ][-N<
mov eax,4 ;sys_write jC1mui|Y^
int 80h ;kernel system call h+Km |
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mov ebx,0 ;return value e Ll+F%@
mov eax,1 ;sys_exit |ofegO}W7
int 80h ;kernel system call -x2/y:q `
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*@fR36
x86 CPU,Windows,MASM32 FX7=81**4
.386 T9]|*~ ,T
.model flat,stdcall a&~_ba+
option casemap:none /W'GX n
;Include 文件定义 U'zW; Lt
include windows.inc }^WQNdws56
include user32.inc 9;s:Bo
includelib user32.lib v5l)T}Nb
include kernel32.inc ^'i(@{{o\
includelib kernel32.lib ~U`oew
;数据段 B"T Z8(<
.data Z8nj9X$
szCaption db 'A MessageBox!',0 k|Vq-w
szText db 'Hello,world!',0 Zh`lC1l'
;代码段 /]_T
.code y0>asl
start: 'M185wDdAl
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Rk.YnA_J6
invoke ExitProcess,NULL Rkm1fYf
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> WS8m^~S@\
end start )%x oN<
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AWK wXp
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BEGIN { print "Hello, world!" } IW3ZHmrpA
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BASIC 5bM/
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传统版BASIC(例如GWBASIC): `,d*>
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10 PRINT "Hello, world!" 4>nY't;0
20 END E%OY7zf`%
e> ~g!S}G
或在提示符输入: b{<qt})
q}>1Rr|U`
?"Hello, world!":END ?D-1xnxep
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现代版BASIC(例如Quick BASIC): !/+ZKx("9
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Print "Hello, world!" GVk&n"9kp
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以下的语句在Quick BASIC中同样有效: SA&0f&07i
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? "Hello,world!" km2('t7?
;LE4U OK
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BCPL }]_/:KUt
GET "LIBHDR" aAZS^S4v
r=P)iE:
LET START () BE l
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$( fyPpzA0
WRITES ("Hello, world!*N") ^I03PIy0l
$) ,d n9tY3
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R>SS\YC'X
Befunge 5ckL=q"+/
"!dlrow olleH">v >c%OnA,3
, n 1MZHa,
^_@ 1S9(Zn[2,
"a))TV%N
1oD,E!+^d
Brainfuck |niYN7 17
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< B*7Y5_N
+++++++++++++++.>.+++.------.--------.>+.>. xgHR;USH
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C hc
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#include <stdio.h> >Jh*S`e
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int main(void) {Vw+~8
{ d4KTwn5g
printf("Hello, world!\n"); I Wcgh`8
return 0; OV3l)73?t
} ,T@+QXh
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C++ eqbQ,, &
#include <iostream> 0+MNu8t
twElLOE
int main() 2g5i3C.q$
{ HA&7
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std::cout << "Hello, world!" << std::endl; $U%M]_
return 0; Z-|.j^n
} 0Jz H dz
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C++/CLI 85CH%
I#
int main() li'h&!|]
{ ~_opU(;f
System::Console::WriteLine("Hello, world!"); aX`"V/
} O O?e8OU
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C# (C Sharp)
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class HelloWorldApp %@tKcQ
{ O
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public static void Main() 68Po`_/s
{ O b'B?
System.Console.WriteLine("Hello, world!"); JPQWRK^
} |,3s]b`
} f%vJmpg
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COBOL F.5'5%
IDENTIFICATION DIVISION. zh`!x{Z?^
PROGRAM-ID. HELLO-WORLD. ]v^/c~"${
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ENVIRONMENT DIVISION. x`T
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DATA DIVISION. Uytq,3Gj6
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PROCEDURE DIVISION. fkf69,+"]
DISPLAY "Hello, world!". aT}Mn(F*?
STOP RUN. ?;84 M@
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R_9 &V!fl
Common Lisp \kSoDY`l&
(format t "Hello world!~%") Zoe>Ow8mE`
y/=:F=H@w
:})(@.H
DOS批处理 Z]?Tx2|7
@echo off N(i%Oxp1
echo "Hello, world!" q#LB 2M
>[t0a"
ZK:dhwer
Eiffel W0e+yIaR
class HELLO_WORLD g4b-~1[S
F6>K FU8
creation :5)Dn87
make vHR-mQUs
feature VB>KT(n-b
make is l
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local S&/</%
io:BASIC_IO 3#GZ6:rVJ
do aD)$aK
!!io 48%-lkol)
io.put_string("%N Hello, world!") oh*Hzb
end -- make n>Cl;cN=
end -- class HELLO_WORLD +c)"p4m
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Erlang 6,C2PR_+
-module(hello). 0IZaf%zYc
-export([hello_world/0]). A:|dY^,:?*
Vb{5 -v
;a
hello_world() -> io:fwrite("Hello, World!\n"). [zXKS|
VnlgX\$}
++ O
L&n
Forth OJ#ehw <
." Hello, world!" CR 2P\k;T(
Xjb 4dip
8yW 8F26
Fortran wyzx9`5~d
WRITE(*,10) /<[S> ;!kr
10 FORMAT('Hello, World!') &6]+a4
STOP '?| (QU:)F
END feJzX*u
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o
7D'-^#S5
HTML /#mq*kNIM6
<HTML> .II*wKk
<HEAD> b1+6I_u.
<TITLE> Hello World! </TITLE> H~Z$ pk%
</HEAD> `
=ocr8c
<BODY> v[$-)vs*ag
<p>Hello World!</p> C]@v60I
</BODY>
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</HTML> }"}
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H a[e&O&Z
hz:^3F`>/&
$'Pn(eZHGv
INTERCAL 0!4;."S
PLEASE DO ,1 <- #13 G.j R
DO ,1 SUB #1 <- #238 S8=Am7D]1
DO ,1 SUB #2 <- #112 g/*x;d=
DO ,1 SUB #3 <- #112 m(2(Caz{
DO ,1 SUB #4 <- #0 "n<rP 3y
DO ,1 SUB #5 <- #64 7JC^+rk
DO ,1 SUB #6 <- #238 l>(w]
DO ,1 SUB #7 <- #26 )q.Z}_,)@
DO ,1 SUB #8 <- #248 ^O>G?a
DO ,1 SUB #9 <- #168 ZD$W>'m{F
DO ,1 SUB #10 <- #24 K&L9Ue
DO ,1 SUB #11 <- #16 NxOiT#YH
DO ,1 SUB #12 <- #158 euxkw]`h6
DO ,1 SUB #13 <- #52 hbZ]DRg
PLEASE READ OUT ,1 '(ZJsw
PLEASE GIVE UP ]V*ku%L0
Oup5LH!sW
p#14
Java .`I;qF
public class Hello \o|5/N
{ t1LIZ5JY
public static void main(String[] args) =1!,A
{ rTJ='<hIy
System.out.println("Hello, world!"); wEQ7=Gyx
} M<Gr~RKmAn
} 8`\^wG$W
i|`b2msvd
O"'.n5>:`
JSP
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<% 8S8^sP
out.print("Hello, world!"); C(w?`]Qs
%> R,3E_me"}
d3nx"=Cy0I
t=-t xnlr<
MIXAL `zRE $O
TERM EQU 19 the MIX console device number cImOZx
ORIG 1000 start address jCJbmEfo9@
START OUT MSG(TERM) output data at address MSG 3Jt7IM!9[
HLT halt execution B~%'YQk
MSG ALF "MIXAL" O?p8Gjf
ALF " HELL" g&79?h4UXQ
ALF "O WOR" t h!$R
ALF "LD " ,5Vc
END START end of the program >rbHpLm1`
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ujlIWQU2mo
Nuva '7'*+sgi$
<..直接输出..> Mx-? &
Hello, world! fG *1A\t]
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<..或者..> NZu\ Ae
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<. %NyV2W=~X
// 不带换行 3CKd[=-Z
? "Hello, world!" rLkUIG
9EPE.+ns
// 或者 PIZnzZ@Z;
"7]YvZYu0
// 带换行 [RAzKzC\M
?? 'Hello, world!' zRO-oOJ
.> P^lzl:|
/mi9q
i8h(b2odQ
OCaml r>>4)<C7J
let main () = @&I7z,
print_endline "Hello world!";; 0Q>yv;M
f *Xum[
oVD)Fb%[i9
Pascal AZj`o
program Hello; ZWtlO P#]
begin /w!!jj^
writeln('Hello, world!'); ;)6LX-
end. |UudP?E
$0kuR!U.N
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Perl 5s5GBJ?
#!/usr/local/bin/perl 5l(8{,NDt
print "Hello, world!\n"; AQUl:0!
"8.to=Lx
wgN)*dpuI
PHP P#8+GN+bF
<?php aEO`` W
print("Hello, world!"); 4R c_C0O
?> 3?}\Hw
?g~w6|U(r
UQ7E7yY#
Pike FnZMW, P
#!/usr/local/bin/pike =XRTeIZ
int main() &Zzd6[G+
{ o@6hlLr
write("Hello, world!\n"); N7wKaezE
return 0; Zb \E!>V
} vU4Gw4
wsfN \6e
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PL/I fGwRv%$^
Test: procedure options(main); _mEW]9Sp
declare My_String char(20) varying initialize('Hello, world!'); he
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put skip list(My_String); z1K}] z%
end Test; 7EfLd+
=6sA49~M
{vp|f~}zTw
Prolog A`#/:O4|f
goal )335X wA+
write("hello,world!"). b0PQ;?R#V
vp[;rDsIJ$
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Python TKwMgC}<[
#!/usr/local/bin/python N!W# N$
print "Hello, world!" 5xS
ze;
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WR;)
REXX Gz_[|,i
say "Hello, world!" V(?PKb-w)
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Ruby &