“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。 CC,_I>t
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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》。 `!{m#BBT}
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以下是用不同语言写成的Hello World程序的几个例子: u2crL5^z2)
Ada hd*bPj;
with Ada.Text_Io; use Ada.Text_Io; MU2ufKq4)
procedure Hello is YB{hQ<W
begin 9&e=s<6dO
Put_Line ("Hello, world!"); 3B| ?{U~
end Hello; Eshc "U
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汇编语言 =@w,D.5h
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x86 CPU,DOS,TASM U_!Wg|
MODEL SMALL >D20f<w(H
IDEAL =?fxPT[1K
STACK 100H $*EK
v'g[n
8!87p?Mz
DATASEG QR4!r@*=
HW DB 'Hello, world!$' 3Z.<=D
M(>" e*Pi
CODESEG WN8XiV
MOV AX, @data !bEy~.
MOV DS, AX UzZzt$Kw
MOV DX, OFFSET HW bs{i@1$
MOV AH, 09H ];cJIa
INT 21H (80 Tbi~+
MOV AX, 4C00H n^Co
INT 21H ^~iu),gu
END Wp!#OY1?
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MVe:[=VOT|
x86 CPU,GNU/Linux,NASM v5J%
p4
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). iDp'M`(6h
;Enter this into "hello.asm" then type: " sh%8
<N
;"nasm -f elf hello.asm" rybs9:_}
;"ld hello.o -o hello" k e$g[g
;"./hello" J,@SSmJ`
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section .data ;data section declaration D
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msg db 'Hello World!',0AH l)@Zuh
len equ $-msg ;string length H(}Jt!/:
j*2Q{ik>J
section .text ;code section declaration ,+`1 /
global _start ;entry point (start of execution) Z4+S4cqnh
_start: mov edx,len ;string length JIeKp7;^
mov ecx,msg ;string start Nr24Rv
mov ebx,1 ;file handle: stdout cBxBIC
mov eax,4 ;sys_write /W4F(3oM
int 80h ;kernel system call &
w%%{lM
3]Jl\<0
mov ebx,0 ;return value Co`O{|NS}!
mov eax,1 ;sys_exit tl.I:A5L
int 80h ;kernel system call C)w11$.YQ9
<zmtVE*>g
6$42-a%b
x86 CPU,Windows,MASM32
VU~
R
.386 gWlv;oq
.model flat,stdcall .m',*s<CMQ
option casemap:none e+Qq a4
;Include 文件定义 lHg&|S&J
include windows.inc G-5wv
include user32.inc *Ru@F:
includelib user32.lib L`$m<9w'
include kernel32.inc be^09'
includelib kernel32.lib )`Zj:^bz9
;数据段 d=?Kk4Ag
.data "S#}iYp
szCaption db 'A MessageBox!',0 Jptzc:~B
szText db 'Hello,world!',0 SkGh@\
;代码段 zGm#erE
.code 8#NI`s*
start: M]\p9p(_
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Q@M>DA!d^V
invoke ExitProcess,NULL ,k% \f]a
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >0#WkmRY
end start )e,Rp\fY$
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AWK Kk?]z7s-4
BEGIN { print "Hello, world!" } Z0fl]3p
Vfm (K
UkO L7M
BASIC p([g/Q
传统版BASIC(例如GWBASIC): fpj,~+
S4n ~wo
10 PRINT "Hello, world!" *k&yD3br-V
20 END
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os=Pr{
或在提示符输入: BQ&G7V
cmw2EHTT<
?"Hello, world!":END B/P E{ /
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现代版BASIC(例如Quick BASIC): nEtG(^N
:n1^Xw0q
Print "Hello, world!" {9yv3[f3
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以下的语句在Quick BASIC中同样有效: Y}G 9(Ci&
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? "Hello,world!" 6EHYIN^D
!/1aot^(
tbx* }uy2
BCPL =Gka;,n
GET "LIBHDR" P>*B{fi^
}|MPQy
LET START () BE x1g0_&F
$( PEKU
WRITES ("Hello, world!*N") X\?PnD`,
$) J>H$4t#HX
XkG:1H;Q%
= F!_ivV
Befunge wi7a_^{
"!dlrow olleH">v v[3QI7E3
, RmR-uQU-c
^_@ C'6yt
<ptskbu
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Brainfuck {_ &*"bK
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Q]Kc<[E
+++++++++++++++.>.+++.------.--------.>+.>. -r.Qy(}p
#:^aE|s
f!3$xu5
C 3WOm`<
#include <stdio.h> v-(Ry<fT9
+#||
w9p
int main(void) ~1_v;LhH5+
{ MLu@|Xgh
printf("Hello, world!\n"); aP#nK
return 0; f!|$!r*q
} T^"-;
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C++ ,YEwz3$5u
#include <iostream> +prr~vgE
\Zpg,KOT
int main() B)q 5m
y
{ K2'Il[
std::cout << "Hello, world!" << std::endl; *B$$6'hi`
return 0; SFj:|S=v6j
} 'Gr}<B$A3
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i!|OFU6
C++/CLI u$vA9g4
int main() !foiGZ3g
{ E41ay:duAl
System::Console::WriteLine("Hello, world!"); (
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} D-v}@tS'
LqDj4[}
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C# (C Sharp) L0sb[:'luz
class HelloWorldApp rw9 m+q
{ vs*Q {
public static void Main() oqXs2F
{ z 2/E?$(
System.Console.WriteLine("Hello, world!"); sQIzcnKB
} GLS`1!
} /=+y[y3`
+dw=)A#/
P+9%(S)L3
COBOL s<GR
?
IDENTIFICATION DIVISION. Q5kf-~Jx+
PROGRAM-ID. HELLO-WORLD. UWf@(8
?y1G,0,
ENVIRONMENT DIVISION. E1"H(m&6
PQ}owEJ2eM
DATA DIVISION. A9 D vU)1
w1N-`S:
PROCEDURE DIVISION. oP%'8%tk
DISPLAY "Hello, world!". 4^OPzg6Z%p
STOP RUN. W%&[gDp
Omkpjr(1
Ig.9:v`
Common Lisp )<>1Q{j@
(format t "Hello world!~%") qs U ob
Qf$3!O}G
saPg2N,
DOS批处理 vz87]InI
@echo off #_U[T
echo "Hello, world!" @pn<x"F5'
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$+%eLx*
Eiffel 79Y;Zgv
class HELLO_WORLD 5Mb5t;4b
dyyGt}}5f
creation o&PPW~D+h@
make HOPi2nf{
feature Y6R+i0guz
make is :wcv,YoSG
local m7n8{J1O2
io:BASIC_IO IT5a/;J
do v;_k*y[VV$
!!io :#pfv)W6t
io.put_string("%N Hello, world!") aR@s.
ll
end -- make ]NRQM8\
end -- class HELLO_WORLD e5HHsR6
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o'hwyXy/S
Erlang 8
FJ>W.
-module(hello). P&2/J%@zG
-export([hello_world/0]). 2 yY.rs
tAxS1<T4
hello_world() -> io:fwrite("Hello, World!\n"). 6.0/asN}
A2xfNY<
nN|1cJ'.Fk
Forth 2(%C
." Hello, world!" CR >AUj4d
'UN
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Rv^
\o
Fortran TQjM3Ri=V
WRITE(*,10) |."thTO
10 FORMAT('Hello, World!') D?Y j5eOa
STOP 7L"Pe'Hw
END YH
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-sqoE*K[8
/OaW4 b$Tz
HTML }o{6
<HTML> lA1l
<HEAD> @4EC z>Q
<TITLE> Hello World! </TITLE> 017(I:V?(:
</HEAD> O&(@Ka
<BODY> `&rt>Bk /
<p>Hello World!</p> no`> r}C
</BODY> __Tg1A
</HTML> k5X& |L/
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g,,'Pdd7Pn
HQ9+ }0(.HMiGj
H hiM nU
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dEuts*@Q
INTERCAL q/N1q&
PLEASE DO ,1 <- #13 JF%_8Ye5
DO ,1 SUB #1 <- #238 x+V@f~2F
DO ,1 SUB #2 <- #112 G&?,L:^t
DO ,1 SUB #3 <- #112 i[\`]C{gf
DO ,1 SUB #4 <- #0 Vr1yj
DO ,1 SUB #5 <- #64 m0(]%Kdw
DO ,1 SUB #6 <- #238 q4wS<,3
DO ,1 SUB #7 <- #26 6_#:LFke
DO ,1 SUB #8 <- #248 #;WKuRv
DO ,1 SUB #9 <- #168 @9X+ BdQU
DO ,1 SUB #10 <- #24 JJ=%\j
DO ,1 SUB #11 <- #16 "N\tR[P!
DO ,1 SUB #12 <- #158 WU"
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DO ,1 SUB #13 <- #52 |[lmW%
PLEASE READ OUT ,1 FO/[7ZH
PLEASE GIVE UP I\FBf&~
%x2_njDd
},W<1*|
Java F4|Z:e,Hr
public class Hello c'gV
{ ET[vJnReC
public static void main(String[] args) bW e_<'N
{ Q Jnji
System.out.println("Hello, world!"); rCTH 5"
} 4U1!SR]s
} )A6 eD
\ O#6H5F
ff3HR+%M
JSP U/|;u;H=
<% !9/1_Bjv
out.print("Hello, world!"); $0OWPC1
%> F6$QEiDu@
d>f.p"B.gj
0OrT{jo
MIXAL 5,,b>Z<
TERM EQU 19 the MIX console device number fZH";_"1
ORIG 1000 start address :qQpBr$
START OUT MSG(TERM) output data at address MSG H}[kit*9
HLT halt execution "B~ow{3
MSG ALF "MIXAL" U~)i&":sN
ALF " HELL" q|N/vkqPz
ALF "O WOR" 0<{zW%w
ALF "LD " ;Ww s;.~
END START end of the program 1l(_SD;90t
hA0g'X2eC
ha%3%O8Z
Nuva "kHQ}#6r
<..直接输出..> TO|&}sDh
Hello, world! Bn5O;I13
F*bmV>Qq
<..或者..> k^vsQ'TD
T,sArKBI
<. {r$n
$
// 不带换行 wP <)
? "Hello, world!" =WYI|3~Cz
64hl0'67y
// 或者 tsLi5;KA]
%~`y82r6
// 带换行 0CTUcVM#9
?? 'Hello, world!' x2KIGG^
.> \+STl#3*q
h
dw~AGO#
w[A$bqz
OCaml ,xJ1\_GI`
let main () = ^zv,VD
print_endline "Hello world!";; _Kw<4$0<p
6;:s N8M+1
|K H&,
Pascal wTL&m+xr
program Hello; +].Zs<