“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。 n{{P3f
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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》。 a)S(p1BGg
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以下是用不同语言写成的Hello World程序的几个例子: qsvpW%?aE
Ada c
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with Ada.Text_Io; use Ada.Text_Io; M1(9A>|nF
procedure Hello is o4'Wr
begin hBoP=X.~
Put_Line ("Hello, world!"); 8{@`kyy|
end Hello; q\U4n[Zk
od(:Y(4
fD(7FN8
汇编语言 hA5,w_G/
mo*'"/
x86 CPU,DOS,TASM Q!x`M4
MODEL SMALL IwM8#6;S~
IDEAL CfY7<o1>
STACK 100H V*~423
Nor`c+,4
DATASEG H1C%o0CPY
HW DB 'Hello, world!$' WCoF{*
Uf^RLdoDn
CODESEG +:!ScG*
MOV AX, @data pEkOSG
MOV DS, AX 0IpST
MOV DX, OFFSET HW +
lP5XY{
MOV AH, 09H \boL`X
INT 21H }<.7 xz|V
MOV AX, 4C00H
363cuRP
INT 21H gQ.yNe
END x8.7])?w
QOlm#S
d,iW#,
x86 CPU,GNU/Linux,NASM OZ&J'Y
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). z!)_'A
;Enter this into "hello.asm" then type: ~;aSX1
;"nasm -f elf hello.asm" m;WUp{'
;"ld hello.o -o hello" O;ZU{VY
;"./hello" WfBA5
gHQ[D|zu
section .data ;data section declaration ;E(gl$c:
msg db 'Hello World!',0AH 699z@>$}
len equ $-msg ;string length " _jIqj6C
#w*1 !
section .text ;code section declaration 'M|W nR
global _start ;entry point (start of execution) SWD
v\Vr
_start: mov edx,len ;string length @R9zLL6#7
mov ecx,msg ;string start ,]i ^/fT
mov ebx,1 ;file handle: stdout [5:,+i
mov eax,4 ;sys_write zKe&*tZ
int 80h ;kernel system call }C/u>89%q
C#emmg!a\
mov ebx,0 ;return value /YR*KxIx
mov eax,1 ;sys_exit |]RV[S3v
int 80h ;kernel system call /gL(40
49bzHEqZ
p H5IBIf'
x86 CPU,Windows,MASM32 S+R<wv,6
.386 bENfEOf,
.model flat,stdcall =#&K\
option casemap:none hc5M)0d
;Include 文件定义 Ht5 %fcD
include windows.inc Qpndi$2H!
include user32.inc j.uN`cU!
includelib user32.lib -i V&-oP
include kernel32.inc $B7<1{<=W
includelib kernel32.lib e7t).s)b{
;数据段 >1`FRw<
.data P1vr}J
szCaption db 'A MessageBox!',0 Vpt)?];P
szText db 'Hello,world!',0 R<Ojaj=V
;代码段 H;k;%Zg;
.code QN9$n%Z
start: l:a+o gm3
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK miCt)Qd
invoke ExitProcess,NULL k
sJz44
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 0AY23/
end start S59!+V
{W3%n* q
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AWK xQ>c.}J/i
BEGIN { print "Hello, world!" } iJ~5A'?6
[y\ZnoB
b3wE8Co
BASIC $)mq
传统版BASIC(例如GWBASIC): t LdBnf
a^'1o9
10 PRINT "Hello, world!" $yIcut7
20 END VQZ3&]o
F8 ;M++
或在提示符输入: TYw0#ZXo
g^NdN46%
?"Hello, world!":END 5~<>h~yJ
)-Zpr1kD
现代版BASIC(例如Quick BASIC): tV9W4`Z2q
#]vq
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Print "Hello, world!" *DLv$/(0
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以下的语句在Quick BASIC中同样有效: l,1 }1{k&
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fR
? "Hello,world!" n!|K#
4))u*c/,
QUaz;kNC7
BCPL #StD]d
GET "LIBHDR" _{8f^@I"+
sRE$*^i
LET START () BE Un]`Gd]:
$( kWF4k
WRITES ("Hello, world!*N") Hig=PG5I
$) ;*:d)'A
HW|c -\tS
!aeL*`;
Befunge UG s
<<
"!dlrow olleH">v I.fV_
H^
, ibl^A=
^_@ }H?8~S=
HPCzh
l#7,<@)
Brainfuck V-}d-Y
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< :M`|*~V~$
+++++++++++++++.>.+++.------.--------.>+.>. q+x4Od3
Y)N(uv6
Y:FV+ SI
C ,cWO Ak
#include <stdio.h> F4k<YU
weT33O"!1
int main(void) MfJk`-%~
{ Xf:CGR8_
printf("Hello, world!\n"); mbsdiab#N
return 0; ^v}Z5,aN
} Mw?nIIu(@
C0jmjZ%w@
uwj/]#`
C++ wHBkaPO!
#include <iostream> a{L`C"rJ
K-)*S\<}
int main() 5hB&]6n
{ ~B:Lai4"
std::cout << "Hello, world!" << std::endl; DvG. G+mo#
return 0; W2wDSP-
} ?f1%)]>
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C++/CLI bS&'oWy*B
int main() N(dn"`8
{ ""^9WLH4g-
System::Console::WriteLine("Hello, world!"); $&qB,>5=X
} EX>> -D7L
N$/{f2iC
[{Fr{La`D'
C# (C Sharp) $.QnM
class HelloWorldApp H+F?)VX}oA
{ 1HN_
public static void Main() DOkEWqM!
{ }1`Rq?@J
System.Console.WriteLine("Hello, world!"); l'&l!D&
} 7\"-<z;kK
} >RHK6c
.'lc[iI9)d
Bo`fy/x#
COBOL go]d+lhFB
IDENTIFICATION DIVISION. |^S[Gr w
PROGRAM-ID. HELLO-WORLD. gET& +M
!__f
ENVIRONMENT DIVISION. Umv_{n`
;G0~f9
DATA DIVISION. S5"xb
u4IgPCTZ+
PROCEDURE DIVISION. +=$\7z> s
DISPLAY "Hello, world!". .#zx[Io
STOP RUN. mZ/?uPIa
v%/8pmZw;
9$~D4T
Common Lisp K
*{C:Y
(format t "Hello world!~%") <z#r3J
C0 .Xp
IQGIU3O
DOS批处理 [dk|lkj@u\
@echo off B6 x5E
echo "Hello, world!" {AO3o<-h
|QAmN>7U
8<^[xe
Eiffel zO2<Igb
class HELLO_WORLD %p/Qz|W
nkS6A}i3o
creation 3dcZ1Yrn
make *7ap[YXZ\w
feature 8ji!FZf
make is ,G"?fQ7z R
local m]Z+u e
io:BASIC_IO &'WgBjP
do *#N%3:@T
!!io
U^VFHIm
io.put_string("%N Hello, world!") uji])e MN~
end -- make /#
0@C[9
end -- class HELLO_WORLD OA%.>^yb@
k,X)PQc
j+_g37$:
Erlang i2N*3X~
-module(hello). Lg9]kpOpa
-export([hello_world/0]). K.o?g?&<
!h?N)9e
hello_world() -> io:fwrite("Hello, World!\n"). bp_3ETK]P
$ n n4
Vn];vN
Forth VY=~cVkzS
." Hello, world!" CR ~ZG>n{Q
K._1sOw'"Y
,{J2i#g<
Fortran _=UXNr8S
WRITE(*,10) E IEwrC
10 FORMAT('Hello, World!') {4}Sl^kn*
STOP V *S|Qy!p
END @a%,0Wn
LMsbTF@E
GS8,mQ8l*l
HTML bCd! ap+#
<HTML> WVy"MD
<HEAD> P/nXY
<TITLE> Hello World! </TITLE> Sl:\5]'yJ
</HEAD> -/#3U{O
<BODY> b'3#FI=:
<p>Hello World!</p> MMhd -B1O&
</BODY> 8 Sl[&
</HTML> 0<nKB}9
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q/Q^\HTk
HQ9+ tSYeZ~
H wKk
.IF dJ
lba*&j]w=
INTERCAL G`6U t
PLEASE DO ,1 <- #13 eC[g"Ef
DO ,1 SUB #1 <- #238 o|^0DYb
DO ,1 SUB #2 <- #112 '?yZ,t
DO ,1 SUB #3 <- #112 }!n<L:njX
DO ,1 SUB #4 <- #0 {sX*SbJt
DO ,1 SUB #5 <- #64 ? 1Z\=s
DO ,1 SUB #6 <- #238 tE>3.0U0Q
DO ,1 SUB #7 <- #26 2q2w o&uK
DO ,1 SUB #8 <- #248 .?AtW:<*I
DO ,1 SUB #9 <- #168 ?xN8HG4
DO ,1 SUB #10 <- #24 9
*]Z
DO ,1 SUB #11 <- #16 YH<@->Ip
DO ,1 SUB #12 <- #158 IEC:zmkn
DO ,1 SUB #13 <- #52 eHqf3f
PLEASE READ OUT ,1 yQou8P=%
PLEASE GIVE UP t9 &O0tpe
}pTw$B
o<V-gS
Java g](m& O
public class Hello '\_ic=&u
{ 2"BlV*\lS
public static void main(String[] args) yv$MQ~]
{ Hsp|<;Yg
System.out.println("Hello, world!"); Qf=%%5+?8
} Wz=ZhE9g
} >z[d~
2GZUMXK
HL 88
JSP m#8}!u&
<% Bu6t3
out.print("Hello, world!"); ?KS9Dh
%>
9]AKNQq m
Ir0er~f+z
Ty@&s58a
MIXAL :Bn\1\
TERM EQU 19 the MIX console device number >vP^l
{SD
ORIG 1000 start address {qOSs,+=L
START OUT MSG(TERM) output data at address MSG G1|
Tu"
HLT halt execution &q