“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。 p=65L
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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》。 I(*4N^9++
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以下是用不同语言写成的Hello World程序的几个例子: $i+
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Ada ni@N/Z?!pA
with Ada.Text_Io; use Ada.Text_Io; }0P5~]S<5A
procedure Hello is i<*{Z~B
begin sacaL4[_<
Put_Line ("Hello, world!"); n%>c4*t
end Hello; i0%S6vmaS
7aJLC!
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汇编语言
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1h.N
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x86 CPU,DOS,TASM L)cy&"L|
MODEL SMALL pUs s_3
IDEAL _^<HlfOK
STACK 100H pk*cch#
R)3P"sGuN
DATASEG ^f-?xXPx
HW DB 'Hello, world!$' Q}N.DM@d3
h98_6Dw(]
CODESEG v^ a.
b
MOV AX, @data gm63dE>
MOV DS, AX :1eJc2o
MOV DX, OFFSET HW 5m`@ 4%)zp
MOV AH, 09H 8#9di
INT 21H L)5YX-?
MOV AX, 4C00H $\|$ekil4
INT 21H p1
9j
END F(- Q]xj,
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x86 CPU,GNU/Linux,NASM v(T;Y=&
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). v(?^#C>6W
;Enter this into "hello.asm" then type: ,iXE3TN;W
;"nasm -f elf hello.asm" OA\2ja~+
;"ld hello.o -o hello" $DmWK_A
;"./hello" <Q06<{]R8
8$:4~:]/
section .data ;data section declaration /Ot=GhN]
msg db 'Hello World!',0AH u.t(78N
len equ $-msg ;string length OKU9v{
8,BNs5
section .text ;code section declaration _y q"F#,*
global _start ;entry point (start of execution) J
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_start: mov edx,len ;string length >;N0( xB
mov ecx,msg ;string start 3le/(=&1
mov ebx,1 ;file handle: stdout Ng?n}$g*
mov eax,4 ;sys_write EROf%oaz=
int 80h ;kernel system call T [
`t?,
em
mov ebx,0 ;return value &wbe^Wp
mov eax,1 ;sys_exit AR i_m
int 80h ;kernel system call fA!uSqR$V
uFM]4v3
{%$eq{~m
x86 CPU,Windows,MASM32 xF'9`y^]!@
.386 FqOV/B
/z2
.model flat,stdcall ANNfL9:Jy
option casemap:none OAu?F}O
;Include 文件定义 }LDH/#
u
include windows.inc _7(>0GY
include user32.inc aHosu=NK
includelib user32.lib Ctpr.
include kernel32.inc bDa(@QJ-
includelib kernel32.lib #{)=%5=c
;数据段 i]:T{2
.data 2f8fA'|O
szCaption db 'A MessageBox!',0 `B{N3Kxbp
szText db 'Hello,world!',0 wf!?'*
;代码段 ^zv0hGk 2
.code ?lJm}0>
start: KLW#+vZ
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK seh1(q?Va4
invoke ExitProcess,NULL HhN;&67~Z
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> .'md `@t
end start x:W nF62
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Om%{fq&
AWK LXr
yv;H
BEGIN { print "Hello, world!" } b
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`A8nAgbe
-4|\,=j
BASIC nPp\IE}:
传统版BASIC(例如GWBASIC): ^EGe%Fq*x]
P9~7GFas|
10 PRINT "Hello, world!" =W(mZ#*vdY
20 END ^2L\Y2
X\tE#c&K
或在提示符输入: UPs*{m
3okh'P%+
?"Hello, world!":END #9Z\jW6b
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现代版BASIC(例如Quick BASIC): MA\"JAP/
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Print "Hello, world!" q@K;u[zFK
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以下的语句在Quick BASIC中同样有效: p\]Mf#B
;Wa4d`K
? "Hello,world!" aZt5/|B
VG*Tdaua~
C~PrIM?
BCPL lf4V;|!^
GET "LIBHDR" ~|e?@3_G
RG [*:ReB9
LET START () BE OOy]:t4 /
$( .
:Q[Z
WRITES ("Hello, world!*N") i3~"qbU%z[
$) [5
Mt,skC:
hu (h'
bD_|n!3
Befunge TwBwqQ)t
"!dlrow olleH">v zr~hGhfq
, '_& Xemz
^_@ q<mDs$^K
/t=R~BJu
~1xln?Q
Brainfuck _-aQ.p ?T
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< +}H2|vP
+++++++++++++++.>.+++.------.--------.>+.>. >e y.7YG
}%_h|N
R I Bj9kd
C *I)oDq3
#include <stdio.h> (uV~1
GxWA=Xp^~G
int main(void) + yX\!H"
{ fHTqLYd-
printf("Hello, world!\n"); 9%e&Z'l
return 0; >S4klW=*I
} pI2g\cH>
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o7"2"(
=>
C++ [MfKBlA
#include <iostream> DC4,*a~
?4%'6R
int main() PjriAlxD
{ ea-NqdGs;m
std::cout << "Hello, world!" << std::endl; @vWf-\
return 0; nQ4 s
} @!z9.o;
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M`!\$D
C++/CLI N1rBpt
int main() ^R.kThG
{ rYUhGmg`
System::Console::WriteLine("Hello, world!"); R/8>^6
} U$o\?4
>%jQw.
d#yb($HAJ
C# (C Sharp) MxMrLiqU6l
class HelloWorldApp Lc ,te1
{ S-{3'D[Nj
public static void Main() F3*]3,&L
{ Q+(}nz4
System.Console.WriteLine("Hello, world!"); 0{bGVLp
} ssVO+
T
} '`g#Zo
t5dk}sRF
MQc|j'vEY
COBOL ?n o.hf
IDENTIFICATION DIVISION.
19a/E1
PROGRAM-ID. HELLO-WORLD. 4naL2 Y!
({=:
N
ENVIRONMENT DIVISION. ['%]tWT9
z(]14250
DATA DIVISION. X2b<_j3
'51DdTU
PROCEDURE DIVISION. hhjT{>je
DISPLAY "Hello, world!". Dohq@+] O
STOP RUN. X;JptF^
'@1o M1
%_xRS
Common Lisp siveqz6h
(format t "Hello world!~%") :G$f)NMK
=!{7ZSu\
.{+<o
DOS批处理 [gm[mwZ
@echo off KKm&~^c
echo "Hello, world!" 4$Oakl*l
t,$4J6
vZj:\geV
Eiffel
'PW~4f/m
class HELLO_WORLD (S/f!Dk&3
,f0|eu>
creation j'Ry.8}
make g.yr)
LHt0
feature BS<5b*wG
make is \6A-eWIQif
local + v. I|c
io:BASIC_IO DiMkcK_e
do aw9/bp*N
!!io yRt]i>
io.put_string("%N Hello, world!") }3sj{:z{
end -- make Y;3DU1MG0
end -- class HELLO_WORLD 8[
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%00KOM:
Erlang PveY8[i
-module(hello). -r%4,4
-export([hello_world/0]). c@d[HstBJ
A[QUFk(
hello_world() -> io:fwrite("Hello, World!\n"). 6Yw;@w\
d?dZ=]~C
UH=pQm^W
Forth -*8 |J;
." Hello, world!" CR }Z5f5q
w"Gci~]bXU
">='l9
Fortran /wplP+w2
WRITE(*,10) G gmv(!
10 FORMAT('Hello, World!') xa+=9=<AQ
STOP R;+vE'&CO
END wZv"tbAWLV
KF^5 C
pR6mSfer
HTML 9?"]dEM
<HTML> o'Q"
<HEAD>
Q)eYJP=W
<TITLE> Hello World! </TITLE> Rlc$2y@pU
</HEAD> ^NZq1c
<BODY> $10"lM[
<p>Hello World!</p> /VFh3n>I2
</BODY> S?pWxHR]
</HTML> olc7&R
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=6FA(R|QU
HQ9+ 'Fi\Qk'D@
H jWHv9XtW
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#-S%aeB
INTERCAL wLn,x;;<
PLEASE DO ,1 <- #13 M*M,Z
DO ,1 SUB #1 <- #238 ykFm$ 0m+I
DO ,1 SUB #2 <- #112 .Cq'D.
DO ,1 SUB #3 <- #112 '1'#,u!
DO ,1 SUB #4 <- #0 c*o05pMS
DO ,1 SUB #5 <- #64 1?:/8l%V
DO ,1 SUB #6 <- #238 %j3XoRex><
DO ,1 SUB #7 <- #26 ;vM&se63
DO ,1 SUB #8 <- #248 AE`z~L,
DO ,1 SUB #9 <- #168 JC|j*x(k/
DO ,1 SUB #10 <- #24 W&E?#=*X
DO ,1 SUB #11 <- #16 t>nx#ErS
DO ,1 SUB #12 <- #158 bCWSh~
DO ,1 SUB #13 <- #52 -'SpSy'_
PLEASE READ OUT ,1 38<!Dt+S(,
PLEASE GIVE UP xgsE JE
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Java +OSF0#bj
public class Hello +<#0V!DM
{ Zy!^HS$
public static void main(String[] args) \0gU)tVZ
{ zx:Qz
System.out.println("Hello, world!"); u-v/`F2wN
}
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} }<m'Nkz<X
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y8oqCe)
JSP zfS0M
<% N %;bV@A9
out.print("Hello, world!"); ! @EZ
%> 62L,/?`B$
jVA|Vi_2
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MIXAL 90Rz#qrI*
TERM EQU 19 the MIX console device number 7$"{&