“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。 S,XKW(5
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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》。 5~QhX22
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以下是用不同语言写成的Hello World程序的几个例子: )Q~C4 C-j
Ada xF&6e&nv
with Ada.Text_Io; use Ada.Text_Io; ]}.0el{
procedure Hello is w:v=se"U
begin f#1/}Hq/I
Put_Line ("Hello, world!"); <o2,HTWNPS
end Hello; ti}f&w
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汇编语言
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x86 CPU,DOS,TASM Sg_O?.r
MODEL SMALL 9YAM#LBTWi
IDEAL *-6?
STACK 100H &m'?*O |
D '<$ g
DATASEG Cpe#[mE
HW DB 'Hello, world!$' Oc#>QZ3
^}hJL7O'
CODESEG GtC7^Z&E
MOV AX, @data =)(0.E
MOV DS, AX C\OECVT
MOV DX, OFFSET HW +^Fp&K+^
MOV AH, 09H X
PA0m
INT 21H >:%BNeO
MOV AX, 4C00H #,TELzUVE
INT 21H -;vT<G3
END )y`i@S}J
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x86 CPU,GNU/Linux,NASM *U_S1>0n
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). (#If1[L
;Enter this into "hello.asm" then type: UoHd -
;"nasm -f elf hello.asm" EZ/^nG
;"ld hello.o -o hello" W+K.r?G<j
;"./hello" 0iV;g`%
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section .data ;data section declaration drI\iae{^
msg db 'Hello World!',0AH !j0_
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len equ $-msg ;string length ,m:L2 -J@
Ch t%uzb,
section .text ;code section declaration b4)k &*dfR
global _start ;entry point (start of execution) Q,~x#
_start: mov edx,len ;string length @`S.@^%7fO
mov ecx,msg ;string start w:Ra7ExP
mov ebx,1 ;file handle: stdout iy}xICt
mov eax,4 ;sys_write Q(e{~
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int 80h ;kernel system call O5M2`6|As
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mov ebx,0 ;return value J+|/-{g
mov eax,1 ;sys_exit -x{&an=
int 80h ;kernel system call 6A?8tm/0
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x86 CPU,Windows,MASM32 x9&p!&*&IT
.386 >azEed<B
.model flat,stdcall 6}#"qqnx
option casemap:none 8ljuc5,J
;Include 文件定义 uFo/s&6K
include windows.inc kM;o0wi
include user32.inc ('JKN"3
includelib user32.lib xp^ 7#`MJ?
include kernel32.inc e1UITjy
includelib kernel32.lib f3vF"O
;数据段 BPewc9RxV
.data ceG&,a$\
szCaption db 'A MessageBox!',0 A?r^V2+j
szText db 'Hello,world!',0 'g hys1H
;代码段 VX!hv`E
.code :BD>yOlG
start: /tZ0
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invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK -?z\5z
invoke ExitProcess,NULL '%&z.{
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> @vt$MiOi
end start ~j"3}wXc5
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AWK #w|5jN?
BEGIN { print "Hello, world!" } dlR_ckp
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BASIC |IN[uQ
传统版BASIC(例如GWBASIC): d@ (vg
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10 PRINT "Hello, world!" Du!._
20 END %Kl(>{N
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或在提示符输入: I .P6l*$
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?"Hello, world!":END 'Wp@b678
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现代版BASIC(例如Quick BASIC): vBoO'l9'M
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Print "Hello, world!" RG}}Oh="v
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以下的语句在Quick BASIC中同样有效: V;;#/$oU:4
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? "Hello,world!" w
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NzlAC
BCPL Ao"C<.gUYP
GET "LIBHDR" 2y%R:Mu
]r959+\$
LET START () BE Dr+ Ps
$( #xp(B5
WRITES ("Hello, world!*N") m9t$h
$) U&W"Ea=R/
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Befunge Y.-S=Y
"!dlrow olleH">v T5e^J"
, W;TJenv
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Brainfuck X 8R1a?
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< pkk4h2Ah
+++++++++++++++.>.+++.------.--------.>+.>. "dtlME{Bx
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C y-a|Lu*
#include <stdio.h> E1(1E?}!
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int main(void) V3uXan_
{ B^q<2S;
printf("Hello, world!\n"); H~Uq?!=b
return 0; qqvF-mDN
} iLtc
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0
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C++ B*79qq
#include <iostream> C6^j#rl
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int main() Pa&4)OD
{ u)~s4tP4
std::cout << "Hello, world!" << std::endl; 1<,/
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return 0; lT,+bU
} s
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C++/CLI 3U;1D2"AE
int main() BIfi:7I;Q
{ CDCC1B G"
System::Console::WriteLine("Hello, world!"); GOVAb'
} :Q-F9o
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C# (C Sharp) 7' eh)[T
class HelloWorldApp F,pCR7o>
{ ;k}H(QI
public static void Main() 88o:NJ}_
{ m UgRm]
System.Console.WriteLine("Hello, world!"); OKPJuV`y6
} _tWE8r,
} [ {cC
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COBOL @O/,a7Tt
IDENTIFICATION DIVISION. =bL{i&&
PROGRAM-ID. HELLO-WORLD. l &Z(K,6
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ENVIRONMENT DIVISION. c#pj :f*H
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DATA DIVISION. SdI1}&
- 9-fX(I
PROCEDURE DIVISION. 'C~9]Y].
DISPLAY "Hello, world!". y x;h
STOP RUN. X4Xf2aXI
%h/! Y<%
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Common Lisp @a(oB.i
(format t "Hello world!~%") t?3BCm$Mi
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DOS批处理 Ub)M*Cq0(o
@echo off yekRwo|
echo "Hello, world!" 8*Zvr&B,G
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Eiffel N-%#\rPq.
class HELLO_WORLD Pux)>q] C
. r`[
creation euZI`*0
make -3vh!JMN
feature x+^Vg3 q
make is 4_Y!el H)
local 5;Ia$lm=y
io:BASIC_IO N-QCfDao
do 9v~5qv;
!!io
8 u:2,l
io.put_string("%N Hello, world!") oMc1:=EG
end -- make 40.AM1Z0f
end -- class HELLO_WORLD %nQmFIt
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Erlang 5i9Ub|!P
-module(hello). w-FHhf
-export([hello_world/0]). nh;y:Bi
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hello_world() -> io:fwrite("Hello, World!\n"). =v0~[E4
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Forth usH%dzKK
." Hello, world!" CR O`(U/?
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Fortran }
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WRITE(*,10) ? s4oDi|:
10 FORMAT('Hello, World!') (8x
gn
STOP U>A6eWhH
END ImHU:iR[J-
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HTML VDn:SGj5
<HTML> FmI;lVF0j
<HEAD> :mp$\=
<TITLE> Hello World! </TITLE> Q>%E`h
</HEAD> Zs73
ad
<BODY> ?*+1~m>
<p>Hello World!</p> 7@a\* |K6
</BODY> [gn[nP9
</HTML> }4KW@L[g
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. s-5N\
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INTERCAL +7Rt{C,
PLEASE DO ,1 <- #13 :D4];d>1
DO ,1 SUB #1 <- #238 8]]@S"ZM,\
DO ,1 SUB #2 <- #112 D aDUK?
DO ,1 SUB #3 <- #112 UM\}aq=,
DO ,1 SUB #4 <- #0 # JFYws
DO ,1 SUB #5 <- #64 'M-)Os"
DO ,1 SUB #6 <- #238 vv*
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DO ,1 SUB #7 <- #26 l7~Pa0qD
DO ,1 SUB #8 <- #248 AysL-sqR
DO ,1 SUB #9 <- #168 R8ZD#,;
DO ,1 SUB #10 <- #24 D6:DrA:
DO ,1 SUB #11 <- #16 D-D# `
DO ,1 SUB #12 <- #158 )Y8qWJU
DO ,1 SUB #13 <- #52 mtX31M4
PLEASE READ OUT ,1 N'a?wBBR
PLEASE GIVE UP tvCcyD%w
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Java -;ER`Jqs,
public class Hello z L8J`W
{ h[y*CzG
public static void main(String[] args) e# <4/FR
{ B,MQ.|s[
System.out.println("Hello, world!"); q|Fjm]AF
} C (U
} AoU_;B\b%
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J@gm@ jLc
JSP K4Y'B
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<% Z*Zc]hD
out.print("Hello, world!"); Bs@:rhDi
%> A$ J9U3+O
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MIXAL =-m(\}
TERM EQU 19 the MIX console device number XD
5n]AL
ORIG 1000 start address W[fT
R?n
START OUT MSG(TERM) output data at address MSG []=_<]{
HLT halt execution T;J7+0
MSG ALF "MIXAL" $)f"K
ALF " HELL" l-cW;b~
ALF "O WOR" s!aO*\[<h
ALF "LD " 3l$E8?[Zwi
END START end of the program y,V6h*x2
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<..直接输出..> re/xs~
Hello, world! /Bh>
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<..或者..> %fBP:5%K
4?v$<=#21*
<. V&g)m.d:n
// 不带换行 TqXge{r
? "Hello, world!" D/cg7
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// 或者 <c(&T<$
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// 带换行 8<Xq=*J+
?? 'Hello, world!' }a'cm!"
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