“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。 <p2\;\?4z
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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》。 >xsY"N&1i'
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以下是用不同语言写成的Hello World程序的几个例子: >}JEX]V
Ada wL6G&6]</W
with Ada.Text_Io; use Ada.Text_Io; ua_,c\iL
procedure Hello is W%o! m,zFM
begin A0v@L6m-O
Put_Line ("Hello, world!"); 2d
YU
end Hello; Ag8lI+
h
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=9
4-$kcwA
汇编语言 6Lg#co}9
3 +`,'Q9
x86 CPU,DOS,TASM 0V`~z-#
MODEL SMALL ZjrBOb
IDEAL ej=}OH4
STACK 100H IH5^M74b
%Q;:nVt
DATASEG ,\d03wha
HW DB 'Hello, world!$' eW}-UeT
D}-HWJQA3
CODESEG !FB2\hiM
MOV AX, @data 1 CV?
MOV DS, AX XIl#0-E0X
MOV DX, OFFSET HW 'A1y~x#2B
MOV AH, 09H N4{g[[ T
INT 21H A.r.tf}:
MOV AX, 4C00H m2ph8KC
INT 21H Hd
gABIuX
END :?i,!0#"
F*NHy.Y
(/t{z=
x86 CPU,GNU/Linux,NASM fWDTP|DV
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). gT,iH.
;Enter this into "hello.asm" then type: r]wy-GT
;"nasm -f elf hello.asm" -OKXfN]
;"ld hello.o -o hello" U<'z,Px6
;"./hello" IA}.{zY~|
.v9i|E=<~
section .data ;data section declaration z:)*Aobwv
msg db 'Hello World!',0AH 4FKgp|Y0
len equ $-msg ;string length {?X +Yw
;CV'
section .text ;code section declaration Z 8GIZ
global _start ;entry point (start of execution) w[EEA_\
_start: mov edx,len ;string length n-<`Z NMU
mov ecx,msg ;string start T ~p>Ed 9
mov ebx,1 ;file handle: stdout NvpDi&i
mov eax,4 ;sys_write A v;NQt8ut
int 80h ;kernel system call 1 7iw`@
2o W'B^-
mov ebx,0 ;return value 4=& d{.E
mov eax,1 ;sys_exit <\d2)Iv
int 80h ;kernel system call xr!A>q+@i
~i>'3j0@k
CL t(_!q
x86 CPU,Windows,MASM32 VwarU(*
.386 |t#s h
.model flat,stdcall &rc
r>-
option casemap:none uD ;T
;Include 文件定义 eq9qE^[Z&
include windows.inc :cP u
include user32.inc UM0#S}
includelib user32.lib Kf$6D 79#
include kernel32.inc @ W q8AFo
includelib kernel32.lib \Z~
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;数据段 qi8AK(v
.data ogya~/
szCaption db 'A MessageBox!',0 N2u4MI2
szText db 'Hello,world!',0 $ylxl"Y
;代码段 qa6HwlC1
.code !yKrA|w1
start: QP@@h4J^
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Ku3NE-)
invoke ExitProcess,NULL *$mb~k^R
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> :U @L$
end start |UcF%VNnz1
NG4@L1f%
SF[Z]|0gs
AWK 9G6auk.m.O
BEGIN { print "Hello, world!" } gDH|I;!
azTiY@/
ZMK1V)ohn
BASIC kkj_k:Eah
传统版BASIC(例如GWBASIC): zThut!O
e)F_zX
10 PRINT "Hello, world!" KT<N
;[;
20 END V<KjKa+sG
Xxm7s S
或在提示符输入: V:AA{<
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?"Hello, world!":END ]Rmu+N|
}MM:q R
现代版BASIC(例如Quick BASIC): 1O90 ]c0
fECmELd
Print "Hello, world!" = mhg@N4
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以下的语句在Quick BASIC中同样有效: t
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? "Hello,world!" ,%y!F3m
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|%(qaPA1
BCPL =Q!V6+}nY^
GET "LIBHDR" Jp~[Dm
j?!/#'
LET START () BE dmMrZ1u2
$( gLbTZM4i
WRITES ("Hello, world!*N") )_Iu7b
$) ?.nD!S@
@\=4 Rin/q
>vuR:4B
Befunge g_"B:DR
"!dlrow olleH">v J^pq<
, P;ZVv{mT
^_@ Vz y )jf
3tmS/tQp
GbC JGqOR
Brainfuck +#@2,
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ORfMp'uP=
+++++++++++++++.>.+++.------.--------.>+.>. `3dGn.M
;#7:}>}rO
id/y_ekfP
C O*Z-3l
#include <stdio.h> 3E8 Gh>J_
t0T#Xb
int main(void) ]TsmW ob
{ 2]tW&y_i
printf("Hello, world!\n"); AxCFZf 5
return 0; asbFNJG{
} 4&B|rf
*+J`Yk7}
O+~@S~
C++ mxCqN1:#
#include <iostream> ' KNg;
4}<[4]f?|
int main() h;J%Z!Rjw
{ Oc/ i'
std::cout << "Hello, world!" << std::endl; F[0w*i&u5
return 0; v0%FG9Gk
} 7+P-MT
byIP]7Ld
{\
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C++/CLI "s\himoa
int main() 7t6TB*H
{ H*&!$s.
System::Console::WriteLine("Hello, world!"); }wGy#!CSza
} VS5D)5w#
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C# (C Sharp) JvtbGPz
class HelloWorldApp !LpFK0rw
{ 4/&.N]
public static void Main() 3u=>Y^wu
{ 8oP"?ew#
System.Console.WriteLine("Hello, world!"); x\5\KGw16
} QV=|'
S
} e]7J_9t@
4?aNJyV%&
+`.,6TNVlY
COBOL pA@BW:#
IDENTIFICATION DIVISION. va;fT+k=
PROGRAM-ID. HELLO-WORLD. s&-dLkis{u
VCUsvhI
ENVIRONMENT DIVISION. )AAPT7!U
6W N(Tw
DATA DIVISION. zUJPINDb
D (">bR)1
PROCEDURE DIVISION. l>@){zxL
DISPLAY "Hello, world!". j.29nJ
STOP RUN. ;QQ/bM&I
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xGK"`\V
Common Lisp >]?!9@#IH
(format t "Hello world!~%") ~4ysg[`
lJU]sZ9~b
]hY4
MS
DOS批处理 WNiM&iU
@echo off W%K=N-kE_
echo "Hello, world!" j`k:)
3}i(i0+
j 4eq.{$
Eiffel
lD?]D&
class HELLO_WORLD UphZRgT!N
v`~egE17
creation HJOoCf
make 3xpygx9
feature X"v)9p
make is Vpf7~2[q%
local E
<h9o>h
io:BASIC_IO IlMst16q5
do w;V+)r?w
!!io ^e1mK4`
io.put_string("%N Hello, world!") #(r1b'jfP
end -- make lC=T{rR
end -- class HELLO_WORLD p~Mw^SN'
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u!I=|1s
Erlang 6Vy4]jdT5
-module(hello). wZ~eE'zx+
-export([hello_world/0]). nbSu|sX~r5
`5t
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hello_world() -> io:fwrite("Hello, World!\n"). 3aEO9v,n
!FbW3p f
l AZBlO
Forth Zs}EGC~&
." Hello, world!" CR )|L#i2?:
X5o{d4R L
C)+%9Edg
Fortran !R1OSVFp
WRITE(*,10) ddvtBAX
10 FORMAT('Hello, World!') UJrN+RtL
STOP `:EU~4s\
END IFF3gh42.
RJA#cv~f
WlnS.P\+E
HTML )W3kBDD
<HTML> "l
1z@
<HEAD> 8POLp9>X
<TITLE> Hello World! </TITLE> ,\0>d}eh!
</HEAD> F;)qM|7
<BODY> p (x<h
<p>Hello World!</p> z irnur1
</BODY> _qq>-{-Ym
</HTML> L
^{C4}x=
NPE7AdB8
h>&t``<
HQ9+ >D*%1LH~V
H H.[t&VO
@ R;o $n
3+WostOx
INTERCAL !i?aRI/6
PLEASE DO ,1 <- #13 Xm[Cgt_?
DO ,1 SUB #1 <- #238 Y .\<P*iO
DO ,1 SUB #2 <- #112 d0N/!;
DO ,1 SUB #3 <- #112 !_j6\r=
DO ,1 SUB #4 <- #0 {A8w~3F
DO ,1 SUB #5 <- #64 zZ{(7Kfz
DO ,1 SUB #6 <- #238 N1espc@j
DO ,1 SUB #7 <- #26 NIxtT>[+3
DO ,1 SUB #8 <- #248 teg[l-R"7z
DO ,1 SUB #9 <- #168 -bQi4
DO ,1 SUB #10 <- #24 Zi ;7.P qL
DO ,1 SUB #11 <- #16 E#mpj~{-
DO ,1 SUB #12 <- #158 y'U-y"7y
DO ,1 SUB #13 <- #52 xX2/uxi8
PLEASE READ OUT ,1 F}=O Mo:.
PLEASE GIVE UP ;v>+D
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Java PgwNE wG
public class Hello !eGUiE=
{ Ihg1%.^V\
public static void main(String[] args) y_N h5
{ PW GNUNc
System.out.println("Hello, world!"); ~MLBO
} x @uowx_&m
} Hrj@I?4
1|xo4fmV
,ko0XQBl
JSP ~X%W2N2
<% !vH={40 ]
out.print("Hello, world!"); UaV8!Z>
%> ;@G5s+<l
h&m4"HBL_
$o>6Io|D
MIXAL L s(l
TERM EQU 19 the MIX console device number )>8 k8E
ORIG 1000 start address ,kw:g&A
START OUT MSG(TERM) output data at address MSG C'xWRSDO
HLT halt execution tY6QhhuS:
MSG ALF "MIXAL" 5u&hp
ALF " HELL" "y$s`n4Mj
ALF "O WOR" ThJ`-Ro
ALF "LD " ^<QF*!
END START end of the program QDJe:\n
7G 5VwO
8Xk,Nbcqt
Nuva qBXIR}
<..直接输出..> QeipfK+me
Hello, world! 8VR!
Y0`e
k{w
<..或者..> QKtVwsz
+
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<. a
qIpO
// 不带换行 LQ.0"6oj
? "Hello, world!" Xrd-/('2
T96M=?wh!
// 或者 P'D'+qS
B5H=#
// 带换行 :`20i*
?? 'Hello, world!' BF+i82$zo
.> SbN.z
-<M'h
ck K9@RQ
OCaml W``
-/
let main () = /D
~UK"}
print_endline "Hello world!";; } {<L<
`*HM5 1U
uT2w2A;
Pascal xmbFJUMH
program Hello; OIdoe0JR:O
begin H|/U0;s
writeln('Hello, world!'); +U*:WKdI?
end. fD ?w!7f-1
Jw)-6WJ!uO
=y WHm
Perl f`"@7-N
#!/usr/local/bin/perl p-,(P+Np
print "Hello, world!\n"; 8$y5) ~Q
7Hzv-s
7=[/J*-m
PHP R?H[{AX
<?php =>,X)+O
print("Hello, world!"); NncII5z
?> d2[R{eNX=
V{yk
Tl`HFZQ1
Pike f4r)g2Zb[
#!/usr/local/bin/pike h^=9R6im
int main() RqRyZ*n
{ Nr:%yvk%s
write("Hello, world!\n"); {'1e?
return 0; muKCCWy#
} !0!r}#P
#5}v?
fVx_]5jM
PL/I ])iw|`@dJ
Test: procedure options(main); ;}E$>]*Yn
declare My_String char(20) varying initialize('Hello, world!'); UJhUb)}^
put skip list(My_String); 'NDDj0Y
end Test; BhC>G2 ^7
U((mOm6
I2^Eo5'
Prolog 3J3wKw!`
goal <u?\%iJ"
write("hello,world!"). t+,2 p|B
xsvJjs;=
{"rL3Lk
Python %xp 69
#!/usr/local/bin/python ?]+!gz1
print "Hello, world!" @Yw42`>!s
e{^lD.E
'?3(&
REXX y7'9KQ
say "Hello, world!" 1.Neg|
{Wr5F9q
ItZ*$I1<
Ruby gXY]NWI
#!/usr/bin/ruby SR<W3a\
print "Hello, world!\n" tU>7jo[-p
NZ+TTMv
"od2i\
Scheme =t|,6Vp
(display "Hello, world!") 7dR]$~+*e
(newline) '
wp _U/
"wxyY^"
H5CL0#I
sed (需要至少一行输入) H#T&