“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。 #^Pab^Y3r-
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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》。 #.[eZ[
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以下是用不同语言写成的Hello World程序的几个例子: 3fB]uq+eD%
Ada (Nk[ys}%*
with Ada.Text_Io; use Ada.Text_Io; v3FdlE
procedure Hello is AO]cnhC
begin a'/i/@h
Put_Line ("Hello, world!"); u%+k\/Scp.
end Hello; k4hk*
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汇编语言 rUmP_
FMI1[|:;
x86 CPU,DOS,TASM \!BVf@>p%
MODEL SMALL 1^E5VG1[
IDEAL {jmy:e2
STACK 100H vNrn]v=|}7
Z
b$]9(RS
DATASEG Qubu;[0+a
HW DB 'Hello, world!$' pr7lm5
7pciB}$2
CODESEG fByf~iv,
MOV AX, @data g#^MO]pY
MOV DS, AX Iz#4!E|<
MOV DX, OFFSET HW .(.<
MOV AH, 09H !|i #g$
INT 21H 3NDddrL9
MOV AX, 4C00H Z+J4q9^$
INT 21H \`xlD&F@U
END -fmJkI
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x86 CPU,GNU/Linux,NASM DyiJ4m}kh
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). `o295eiY(b
;Enter this into "hello.asm" then type: la_c:#ho
;"nasm -f elf hello.asm" -~lq <M
;"ld hello.o -o hello" xk%
62W
;"./hello" 25-h5$s
megTp
section .data ;data section declaration 0kOwA%m
msg db 'Hello World!',0AH ow{. iv\,u
len equ $-msg ;string length -X~|jF
S6JXi>n
section .text ;code section declaration &0qpgl|
global _start ;entry point (start of execution) )Hmf=eoc
_start: mov edx,len ;string length vno/V#e$WX
mov ecx,msg ;string start ktx| c19
mov ebx,1 ;file handle: stdout D_0Vu/v
mov eax,4 ;sys_write /OzoeIt
int 80h ;kernel system call =3w;<1 ?'
}UB@FRPF
mov ebx,0 ;return value S#y[_C?H
mov eax,1 ;sys_exit G%t>Ll``C
int 80h ;kernel system call PC<_1!M]
wN4#j}C
]lBCK
x86 CPU,Windows,MASM32 dp'[I:X
.386 >20dK
.model flat,stdcall `(0B09~7
option casemap:none z<vh8dNl
;Include 文件定义 4,c6VCw3+
include windows.inc SnQT1U%
include user32.inc ybE2N
includelib user32.lib YnU)f@b#
include kernel32.inc pC>h"Hy
includelib kernel32.lib CCe>*tdf
;数据段 ~Ss,he]Er
.data ][v]Nk
szCaption db 'A MessageBox!',0 LrbD%2U$j5
szText db 'Hello,world!',0 )j>U4a
;代码段 ;VAyH('~
.code 60u_,@rV
start: 2*V[kmD/3
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ~r5S{&
invoke ExitProcess,NULL U>f'j;5
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 5HV+7zU5
end start ,_RNZ
sa;&
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-"dt3$ju
AWK e@ZM&iR
BEGIN { print "Hello, world!" } ; s/<wx-C
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+)"Rv%.
BASIC Q}L?o
传统版BASIC(例如GWBASIC): yW=+6@A4
C$1W+(
10 PRINT "Hello, world!" 71{jedT
20 END A+0-pF2D
}QE*-GVv]
或在提示符输入: u/u(Z&
c Pf_B=
?"Hello, world!":END #6<1
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@i; )`k5b
现代版BASIC(例如Quick BASIC): ?e<2'\5v
}ARA K ^%
Print "Hello, world!" K8_v5
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以下的语句在Quick BASIC中同样有效: !
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? "Hello,world!" +wmG5!%$|
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yEI@^8]s
BCPL ezp%8IZ;
GET "LIBHDR" ^0OP&s;"
lbBWOx/|
LET START () BE }Ze*/p-
$( \H@1VgmR;
WRITES ("Hello, world!*N") c_D(%Vf5
$) j,+]tHC-
]$[sfPKA
*kl :/#
Befunge $}gMJG
"!dlrow olleH">v zTw"5N
, 5o dT\>Sn
^_@
<Kv$3y
o'!=x$Ky
P.,U>m
Brainfuck 6p)AQTh>
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Q,&Li+u|
+++++++++++++++.>.+++.------.--------.>+.>. *7jz(iX
0B]q /G(
+y?Ilkk;j
C Z,.Hz\y1D
#include <stdio.h> WR"D7{>tw
Y#ZgrziYM
int main(void) [7FG;}lB-
{ \:WWrY8&
printf("Hello, world!\n"); qJrT
return 0; c>B1cR
} :x*)o+
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C++ kO}&Oi,?
#include <iostream> xV)[C )6
bx8](cT_
int main() 4VwF\
{ &vpKBR^
std::cout << "Hello, world!" << std::endl; \g39>;iR
return 0; l}))vf=i
} 27e!KG[&
YB5"i9T2
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C++/CLI -)`_w^Ox
int main() 5QMra5N k
{ %L+q:naZe
System::Console::WriteLine("Hello, world!"); L=4+rshl!_
} !mmMAsd,
}'$PYAf6
KhHFJo[8sf
C# (C Sharp) $')C&
class HelloWorldApp y2G Us&09
{ vjuFVJwL
public static void Main() 50^ux:Uv+N
{
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System.Console.WriteLine("Hello, world!"); D(AH3`*|#
} 6}"c4^k6
} dI{DiPho
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uZ!YGv0^
COBOL d#g))f;
IDENTIFICATION DIVISION. ;.A}c)b
PROGRAM-ID. HELLO-WORLD. #X}HF $t{=
sS>b}u+v#!
ENVIRONMENT DIVISION. %c }V/v_h
pjWRd_h.
DATA DIVISION. -zR<m
$F2Uv\7=
PROCEDURE DIVISION. dZU#lg
DISPLAY "Hello, world!". iVXt@[
STOP RUN. lK0ny>RB
6p9fq3~7Y
HEF
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Common Lisp g'(bk@<BP
(format t "Hello world!~%") /T w{JO#Q
6_Fr \H
P8tdT3*6/
DOS批处理 ?Y(
@echo off ,QY$:f<
echo "Hello, world!" +1ICX
1qRquY
qb>41j9_t
Eiffel *NmY]
class HELLO_WORLD mlnF,+s
UerbNz|
creation fZG Y'o&5
make qs5>`skX
feature s,HbW%s
make is q&3
;e4
local gq7tSkH@
io:BASIC_IO u,sR2&Fe
do :GXF=Df
!!io D|:'|7l W
io.put_string("%N Hello, world!") u "[f\l
end -- make !6!)H8rX
end -- class HELLO_WORLD 6Y9N=\`
B/twak\
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Erlang ^#9385
-module(hello). X0lPRk53(
-export([hello_world/0]). $%y q[$^
;tjOEmIiU
hello_world() -> io:fwrite("Hello, World!\n"). XB)D".\
cb}"giXQTB
{213/@,
Forth NAGM3{\5v$
." Hello, world!" CR |N.2iN:
|&; ^?M
QL?_FwZL
Fortran ;8s L
WRITE(*,10) f9.?+.^_
10 FORMAT('Hello, World!') hyI7X7Hy
STOP ,>;21\D
END aZFpt/.d
IDohv[#
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HTML W0qR?jc
<HTML> rq+_[!
<HEAD> _olQ;{ U:
<TITLE> Hello World! </TITLE> y>I2}P
</HEAD> tW\yt~q,
<BODY> "r9Rr_,
>
<p>Hello World!</p> YKyno?m
</BODY> ;J%:DD
</HTML> o`bch?]
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HQ9+ %~u]|q<{
H ^P)f]GQx
D|-]<r1"
L5&M@YTH
INTERCAL #@R0$x
PLEASE DO ,1 <- #13 B
`(jTL
DO ,1 SUB #1 <- #238 Q+:y
DO ,1 SUB #2 <- #112 \TV
DO ,1 SUB #3 <- #112 Rs %`6et}\
DO ,1 SUB #4 <- #0 LgqQr6y"
DO ,1 SUB #5 <- #64 5^B79A"}
DO ,1 SUB #6 <- #238 nV'1 $L#
DO ,1 SUB #7 <- #26 O2w-nd74U
DO ,1 SUB #8 <- #248 zF1!a
DO ,1 SUB #9 <- #168 Abc{<4 z0?
DO ,1 SUB #10 <- #24 3:J>-MO
DO ,1 SUB #11 <- #16 AGlBvRX7e
DO ,1 SUB #12 <- #158 VD;*UkapZx
DO ,1 SUB #13 <- #52 ^HKXm#vAB
PLEASE READ OUT ,1 oaIk1U;g
PLEASE GIVE UP SE'Im
d:=' Xs
t R^f]+Up
Java u47<J?!Q
public class Hello HIg2y
{ '7iz5wC#
public static void main(String[] args) kSAVFzUS
{ T5XXC1+
System.out.println("Hello, world!"); D6"=2XR4n
} `m,4#P-kj
} (MwRe?Ih
6Yu:v
&f*orM:
JSP b^o4Q[
<% Jw)JV~/0
out.print("Hello, world!"); q m3\)9C
%> b1&