“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。 VZqCFE3
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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》。 hrKeOwKHU
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以下是用不同语言写成的Hello World程序的几个例子: ya2sS9^T[
Ada 4 ?BQ&d
with Ada.Text_Io; use Ada.Text_Io; $s_k/dM~&
procedure Hello is j/TnKO
begin }[eUAGhDU
Put_Line ("Hello, world!"); oZ2:%
end Hello; 9y7hJib
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汇编语言 {gzQ/|}#z-
C
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x86 CPU,DOS,TASM 9Buss+K?/h
MODEL SMALL XgxO:"B
IDEAL QDxs+<#
STACK 100H f hK<P_}
boiP_*|M Y
DATASEG 9po=[{Bp
HW DB 'Hello, world!$' H{=]94
Sv#MlS>
CODESEG 6?,qysm06
MOV AX, @data -9LvAV>
MOV DS, AX "vk]y
MOV DX, OFFSET HW V~PGmn[V
MOV AH, 09H jIaaNO)
INT 21H 46vC/
MOV AX, 4C00H NzZ(Nz5
INT 21H 6KGT?d
END iU+SXsXLR4
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x86 CPU,GNU/Linux,NASM V(cU/Aia^
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). O\7x+^.
;Enter this into "hello.asm" then type: ;jxX /c
;"nasm -f elf hello.asm" lfBCzxifC
;"ld hello.o -o hello" -)%\$z
;"./hello" X(Af`KOg[
K cex%.
section .data ;data section declaration ~d&&\EZ
msg db 'Hello World!',0AH MY{Kq;FvRP
len equ $-msg ;string length A23K!a2u&
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section .text ;code section declaration X,3"4 SK
global _start ;entry point (start of execution) tV4yBe<``
_start: mov edx,len ;string length !l dE9 .
mov ecx,msg ;string start 2L^/\!V#
mov ebx,1 ;file handle: stdout |j"C52Q
mov eax,4 ;sys_write 3T(ft^~
int 80h ;kernel system call EE09 Er%\
XSx!11
mov ebx,0 ;return value eAO@B
mov eax,1 ;sys_exit lLVD`)
int 80h ;kernel system call lYe2;bu
%^W(sB$b
]l }v
x86 CPU,Windows,MASM32 E_&;.hw
.386 W\Il@Je;
.model flat,stdcall %D-!<)z
option casemap:none f`vWCb
;Include 文件定义 }#Up:o]A!
include windows.inc 8F\'?7
include user32.inc / !h<+
includelib user32.lib H1~9f{
include kernel32.inc (|O(BxS
includelib kernel32.lib tZ) ,Z<
;数据段 _0 [s]
.data xNY&*jI
szCaption db 'A MessageBox!',0 Lniz>gSc
szText db 'Hello,world!',0 v7j/_;JE;
;代码段 `$4wm0G|
.code |@rf#,hTDp
start: G{pF! q
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK !*^+7M
invoke ExitProcess,NULL <F}j;mX
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ko!]vHB9`
end start Yk{4 3yw
!
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AWK sNG 7fi.|
BEGIN { print "Hello, world!" } }q_Iep
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BASIC X.e4pLwGK
传统版BASIC(例如GWBASIC): L$Xkx03lz>
$W;r S7b
10 PRINT "Hello, world!" W)2k>cS
20 END s7`2ky()kz
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或在提示符输入: mst;q@
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?"Hello, world!":END Fyz1LOH[X
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现代版BASIC(例如Quick BASIC): .4z_ohe
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Print "Hello, world!" IYr4
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以下的语句在Quick BASIC中同样有效: >U:.5Tch'V
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? "Hello,world!" KWVl7Kw#e
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V'N]u(^
BCPL +nFC&~q
GET "LIBHDR" [r1\FF@v,
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LET START () BE w`Cs,
$( x1+ V
WRITES ("Hello, world!*N") HvG~bZN
$) I&&[ ':
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K}dvXO@=|c
Befunge
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"!dlrow olleH">v Q=498Y~x
, L# .vbf
^_@ 3jM+j_nR
-
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#"JtH"pF
Brainfuck >`
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++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< G$iC@,/
+++++++++++++++.>.+++.------.--------.>+.>. /kFw(l_.
mk`#\=GE
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C *edhJUT
#include <stdio.h> qAVZ&:#
oe1$;K>.7
int main(void) "&TN}SBW
{ x)2ZbIDB:"
printf("Hello, world!\n"); \ci[<CP
return 0; ET=-r
} !-|{B3"6
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C++ |s[k= /~"
#include <iostream> ujoJ6UOG
}Lb[`H,}A
int main() G+W0X
{ N._&\fHY
std::cout << "Hello, world!" << std::endl; )tR@\G >%
return 0; k9oLJ<.k
} Q\GSX RP
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C++/CLI .hytn`+9
int main() ^yVKW5x
{ 47^R
System::Console::WriteLine("Hello, world!"); 4X:S#z
}
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C# (C Sharp) H6%%n
X
class HelloWorldApp S,2{^X
{ bZzB\FB~
public static void Main() ]='zY3
{ +G?nmXG[vj
System.Console.WriteLine("Hello, world!"); jun$CY4
} Pa\"l'!>^
} 4lpkq
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COBOL gKWsmx!["
IDENTIFICATION DIVISION. EnnE@BJ"
PROGRAM-ID. HELLO-WORLD. T9O3$1eqfo
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ENVIRONMENT DIVISION. +{pS2I}d
;-!j,V+$h
DATA DIVISION. E [b6k&A
@Xj6h!"R
PROCEDURE DIVISION. k_hs g6Ur.
DISPLAY "Hello, world!". 1o%E(*M4I
STOP RUN. kB $?A8Olu
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Ht=h9}x"g
Common Lisp U
*']7-
(format t "Hello world!~%") 68-2EWq
;f+bIYQz
`c%{M4bF\
DOS批处理 =E10j.r
@echo off k9vzxZ%s:
echo "Hello, world!" c&a.<e3mL
'\I!RAZ
:FqHMN
Eiffel QC^#ns&
class HELLO_WORLD b'$fr6"O1
y=spD^tM8
creation RDWUy(iX
make <9jN4hV
feature 1&Ruz[F5
make is c#YW>(
local 5svM3 #
io:BASIC_IO 2{fPQQ;#
do T?Y/0znB*
!!io S<bsrS*$
io.put_string("%N Hello, world!") %RX}sS
end -- make .1#G*A|
end -- class HELLO_WORLD G~N$bF^R)
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Erlang C])b 3tM,7
-module(hello). }Z Nyd
-export([hello_world/0]). (D1$ &
>4&s7][Q|
hello_world() -> io:fwrite("Hello, World!\n"). GB\1'
1}Mdo&:t
y|(C L^(
Forth aq-R#q
." Hello, world!" CR h<I C
d'!
h}knn3"S
yON";|*\m
Fortran M:QM*?+)
WRITE(*,10) ?f'iS#XL
10 FORMAT('Hello, World!') 9~ JeI /
STOP $2'Q'Mx[gd
END ZtPnHs.x
`#x}-A$
5,Hj$v7fe
HTML AaX][2y8
<HTML> h}SP`
<HEAD> q9iHJ'lMD*
<TITLE> Hello World! </TITLE> E@%9u#
</HEAD> ~D1&CT#s
<BODY> |p\vH#6y+
<p>Hello World!</p> ilr'<5rq
</BODY> %Z]c[V.
</HTML> 8PXjdHR
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HQ9+ }$E341@
H i4s_:%+
h5^qo ^;g7
)Lb?ZXT3
INTERCAL R?L?6~/q
PLEASE DO ,1 <- #13 +pG[
[}/
DO ,1 SUB #1 <- #238 Y~"5HP|
DO ,1 SUB #2 <- #112 =
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DO ,1 SUB #3 <- #112 x?rn<=
DO ,1 SUB #4 <- #0 YQ$EN>.eO
DO ,1 SUB #5 <- #64 v-ZTl4j$
DO ,1 SUB #6 <- #238 <TQ,7M4X
DO ,1 SUB #7 <- #26 ]21`x
DO ,1 SUB #8 <- #248 .4O~a
DO ,1 SUB #9 <- #168 `% ulorS
DO ,1 SUB #10 <- #24 "%E<%g
DO ,1 SUB #11 <- #16 tQ7:4._
DO ,1 SUB #12 <- #158 Ygs:Ox"[-G
DO ,1 SUB #13 <- #52 Xdl7'~k
PLEASE READ OUT ,1 Ahf71YP
PLEASE GIVE UP V7(-<})8
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Java YU ,fx<c
public class Hello e<+$E%"7hS
{ ec3zoKtV
public static void main(String[] args) Gr8%%]1!0
{ J|=0 :G
System.out.println("Hello, world!"); Z66h
} %Kzu&*9Hb
} yE{\]j|Zf
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h-+vNhH
JSP Ou7nk:I@
<% aE
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out.print("Hello, world!"); q{CD:I:-
%> w:nLm,
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t=*<X
31&;3?3>
MIXAL rd1EA|T
TERM EQU 19 the MIX console device number iiLDl
ORIG 1000 start address -Dy":/Bk
START OUT MSG(TERM) output data at address MSG ^I:f4RWo
HLT halt execution (i;,D-
MSG ALF "MIXAL"
Xf{ht%b
ALF " HELL" 'y&DOy/|
ALF "O WOR" XIBm8IkF
ALF "LD " k@P?,r
END START end of the program @~&1!
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Nuva ~FnuO!C
<..直接输出..> pmc)$3u
Hello, world! oS^g "hQ`\
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<..或者..> ijACfl{!:t
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<. !CUM*<iV
// 不带换行 \ 0/m$V.
? "Hello, world!" hMyN$7Z
%m##i
// 或者 /HVxZ2bar
4ufT-&m};s
// 带换行 .^8rO,H[
?? 'Hello, world!' lUIh0%O
.> [&pMU)
4m!w<c0NL
:Q ?p^OC
OCaml 89UR w9
let main () = J\hqK*/8
print_endline "Hello world!";; vLpIVNA]]Y
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Y-+JDrK
Pascal !NMiWG4R
program Hello; ?Xj@Sx
begin i,2eoM)FB
writeln('Hello, world!'); -`D<OSt7
end. pP%9MSCi
D*'sO B(
5DJ!:QY!
Perl \|C*b<
#!/usr/local/bin/perl d^8n
print "Hello, world!\n"; QBd4ok:R
z.;!Pj
U6#9W}CE
PHP @M6F?;
<?php <vt}+uMzXv
print("Hello, world!"); fo~>y
?> <Qt9MO`a
#'y&M t
"A0y&^4B@
Pike ~-UO^$M-
#!/usr/local/bin/pike EY0,Q {
int main() vXg^K}a#
{ I~4!8W-Y
write("Hello, world!\n"); K5F;/KR"
return 0; T(Ji%S>
} H.[nr:
O*%5P5'p"{
tAkv'.
PL/I JAy-N bb\
Test: procedure options(main); <fHN^O0TS
declare My_String char(20) varying initialize('Hello, world!'); rONz*ly|i
put skip list(My_String); *y', eB
end Test; @}pcj2K#
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pDc~ebh
;rV+eb)I
Prolog 7>h(M+
/
goal O;|jLf_If
write("hello,world!"). \jb62Jp
1jE {]/Y7&
|.;]e[&
Python sRZ?Ilua6
#!/usr/local/bin/python ([#'G+MC&