“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。 RB[/q:
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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》。 6(Vhtr2(*
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以下是用不同语言写成的Hello World程序的几个例子: ~T%Ui#Gc
Ada H;QA@tF>5
with Ada.Text_Io; use Ada.Text_Io; Pubv$u2
procedure Hello is LX\)8~dp
begin zd.'*Dj
Put_Line ("Hello, world!"); L/yaVU{aEb
end Hello; :> SLQ[1
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汇编语言 4^[
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x86 CPU,DOS,TASM >OK#n)U`
MODEL SMALL z3W3=@
IDEAL ET. dI.R8
STACK 100H hCAZ{+`z
wN(&5rfS
DATASEG J'e]x[Y
HW DB 'Hello, world!$' Z|I-BPyn
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CODESEG |NJ}F@t/5
MOV AX, @data vQgq]mA?
MOV DS, AX w^Ag]HZN
MOV DX, OFFSET HW 6Hk="$6K
MOV AH, 09H ~>g+2]Bn>$
INT 21H \x(^]/@
MOV AX, 4C00H f}iU& 3S
INT 21H dw9T f ^V
END hO3{
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x86 CPU,GNU/Linux,NASM oxzq!U
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). /P:EWUf'
;Enter this into "hello.asm" then type: 6]n/+[ ks
;"nasm -f elf hello.asm" o/^1Wm=
;"ld hello.o -o hello" \J3/keL
;"./hello" u%B&WwHG
;|HL+je;Z
section .data ;data section declaration aClA{
msg db 'Hello World!',0AH g*J@[y;
len equ $-msg ;string length [Gtb+'8
O,'#C\
section .text ;code section declaration E7`qmn
global _start ;entry point (start of execution) {[W(a<%bXm
_start: mov edx,len ;string length +rc SL8C
mov ecx,msg ;string start C6]OAUXy:F
mov ebx,1 ;file handle: stdout $gvr
-~
mov eax,4 ;sys_write ?:uNN
int 80h ;kernel system call ),`8eQC
v+6e;xl8
mov ebx,0 ;return value (` c
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mov eax,1 ;sys_exit :h*a
rT4{
int 80h ;kernel system call <#*.}w~
3{ "O,h
.3X Y&6
x86 CPU,Windows,MASM32 ~*-qX$gr
.386 S-c ^eLzQ
.model flat,stdcall 2 hq\n<
option casemap:none #]Y*0Wzpfn
;Include 文件定义 -[heV| $;
include windows.inc G3a7`CD
include user32.inc wxdyF&U
n
includelib user32.lib :kG)sw7
include kernel32.inc x-;`-Uo%
includelib kernel32.lib 3i=Iu0
;数据段 |8U;m:AS
.data B<,YPS8w
szCaption db 'A MessageBox!',0 Zh'&-c_J
szText db 'Hello,world!',0 izuF !9
;代码段 /{*$JF
.code L;/n!k.A
start: K0Tg|9
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK x?sI;kUw8
invoke ExitProcess,NULL ,H[SI0];
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 2*AG7
end start Ow/@Z7~
<]U1\~j
izwUS!5e
AWK c^9tYNn
BEGIN { print "Hello, world!" } #ekM"p
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BASIC J^
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传统版BASIC(例如GWBASIC): G;1?<3
S
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10 PRINT "Hello, world!" RUo9eQIPD
20 END 93o;n1rS
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或在提示符输入: SSA W52xC
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?"Hello, world!":END s([dGD$i
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现代版BASIC(例如Quick BASIC): [*4fwk^
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Print "Hello, world!" `JURQ:l)3^
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以下的语句在Quick BASIC中同样有效: ^jSsa
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? "Hello,world!" Qa4MZj;$K
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zP) ~a
BCPL K$[$4 dX]
GET "LIBHDR" #R&H&1
2A:,;~UH
LET START () BE [V}, tO|
$( 7E7dSq
WRITES ("Hello, world!*N") MMQ;mw=^]
$) B[o`k]]
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TzG]WsY_
Befunge 0L-!!
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"!dlrow olleH">v 5M_Wj*a}7
, 7hw .B'7
^_@ EbQa?
9
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elPE%'
Brainfuck 3iX?~
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 9S7A!AKE
+++++++++++++++.>.+++.------.--------.>+.>. H)(jh
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C 8y2+$
#include <stdio.h> AC- )BM';
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int main(void) E/b"RUv}h
{
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printf("Hello, world!\n"); 83Ou9E!W
return 0; ,. EBOUW^
} A#y@`}]!'
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C++ &, a3@i
#include <iostream> ~qP[eWe
B4H!5b
int main() *f+: <=i
{ FY3IUG
std::cout << "Hello, world!" << std::endl; :l\V'=%9'@
return 0; L"+$Wc[|
} &2.u%[gO[q
)xU-;z0"~
_GYMPq\%L#
C++/CLI E /<lGm:.
int main() ~l E _L1-c
{ Ri*3ySyb
System::Console::WriteLine("Hello, world!"); V|D]M{O
} )6X.Nfkb^k
kL*0M<0 (
v
$({C
C# (C Sharp) LRb,VD:/Y
class HelloWorldApp kAYb!h[`
{ aptY6lGv-|
public static void Main() >!6JKL~=
{ |AZW9
System.Console.WriteLine("Hello, world!"); j Ch=@<9
} \_6OC Vil
} 9"{W,'r&d
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COBOL /B3R1kNf|
IDENTIFICATION DIVISION. KFRw67^
PROGRAM-ID. HELLO-WORLD. 7;:#;YSha
m:QG}{<.h
ENVIRONMENT DIVISION. A#wEuX=[
z`@^5_
DATA DIVISION. 7*o*6,/
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PROCEDURE DIVISION. Y-!YhWsS
DISPLAY "Hello, world!". Aj>[z8!,
STOP RUN. _o3e]{
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S^I,Iz+`S'
Common Lisp (?)7)5H
(format t "Hello world!~%") "8 )z=n
Y,S\2or$
-Yi,_#3{
DOS批处理 hS [SRa'.
@echo off >pyj]y^3
echo "Hello, world!" Xf'=+f2p
='?:z2lJ
oih5B<&f#
Eiffel I5ss0JSl/
class HELLO_WORLD LwqC~N
)EM7,xMz
creation imB# Eo4eY
make {BBw$m, o
feature 0rSIfYZa
make is +>^7vq-\'
local ]:]H:U]p
io:BASIC_IO RSfM]w}Hq#
do B0}~G(t(
!!io >T3H qYX5W
io.put_string("%N Hello, world!") b}!3;: iD
end -- make jF ^5}5U
end -- class HELLO_WORLD : 9!%ZD
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| $^;wP
Erlang GV|9H]_,I
-module(hello). CBT>"sYE1
-export([hello_world/0]). ihe(F7\U
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hello_world() -> io:fwrite("Hello, World!\n"). &[R8Q|1j
1MsWnSvzf
V ~MiO.B
Forth &-yGVx
." Hello, world!" CR F!!N9VIC
8OhDjWVJ
[s1pM1x
Fortran zJlQ_U- !
WRITE(*,10) r`\A
nT?
10 FORMAT('Hello, World!') 5`[n8mU
STOP X&m'.PA
END :\~+#/=:
CG]Sj*SA~
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HTML x|64l`Vp(:
<HTML> Yepe=s+9
<HEAD> !/{+WHxIr|
<TITLE> Hello World! </TITLE> xG&SX#[2
</HEAD> gIEl.
<BODY> Q/>L_S
<p>Hello World!</p> [`=LTBt
</BODY> )U<Y0bZA!
</HTML> qk(P>q8[
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'(&%O8Yi
HQ9+ qa >Ay|92e
H /(C~~XP)
U_yE&6 T
Wo$%9!W
INTERCAL $K~LM8_CKy
PLEASE DO ,1 <- #13 AF,BwLN
DO ,1 SUB #1 <- #238 Ok-.}q>\Mv
DO ,1 SUB #2 <- #112 u0`o A
DO ,1 SUB #3 <- #112 6~meM@
DO ,1 SUB #4 <- #0 /nx'Z0&+X
DO ,1 SUB #5 <- #64 ^,Ydr~|T
DO ,1 SUB #6 <- #238 s Wjy6;
DO ,1 SUB #7 <- #26 ({}( qm
DO ,1 SUB #8 <- #248 vdoZ&Tu
DO ,1 SUB #9 <- #168 @MR?6 n*k
DO ,1 SUB #10 <- #24 !hxIlVd{
DO ,1 SUB #11 <- #16 v{x{=M]
DO ,1 SUB #12 <- #158 -]G(ms;}/Y
DO ,1 SUB #13 <- #52 HHk)ZfWRo
PLEASE READ OUT ,1
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PLEASE GIVE UP 6X
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}*U[>Z-eO
2Nc>6
Java @{
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public class Hello :B*}^g
{ OU DcY@x~
public static void main(String[] args) ^
?hA@{T/1
{ %%%fL;-y
System.out.println("Hello, world!"); Wk;5/
} Jc4L5*Xn/
} wYsZM/lw
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JSP o;F" {RZ
<% 6`01EIk
out.print("Hello, world!"); hm$X]H`uMX
%> jZfx Jm
U$&hZ_A
iGXI6`F"
MIXAL U4?(A@z9^
TERM EQU 19 the MIX console device number m@Ev~~;
ORIG 1000 start address $9
p!Y}
START OUT MSG(TERM) output data at address MSG 7J$b$P0}
HLT halt execution {0\,0*^p
MSG ALF "MIXAL" Y o0FUj
ALF " HELL" =(AtfW^H
ALF "O WOR" n_K~vD
ALF "LD " T>>YNaUL
END START end of the program \J^
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Nuva tY W>t9
<..直接输出..> ;bu#8,
Hello, world! a.F Al@Br
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<..或者..> Aez2*g3
:q3+AtF
<. 4NVV5_K a
// 不带换行 dmrps+L
? "Hello, world!" `A%^UCd
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// 或者
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// 带换行 -!qu"A:
?? 'Hello, world!' w6|9|f/
.> 6x{<e4<n
Tz&Y]#h_
wy1X\PJjH
OCaml }SyxPXs
let main () = fCAiLkT,C[
print_endline "Hello world!";; }H:F< z*
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