“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。 %.b)%=
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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++Oq
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以下是用不同语言写成的Hello World程序的几个例子: v^[Ny0cM
Ada ,KIa+&vJW@
with Ada.Text_Io; use Ada.Text_Io; 0ldde&!p
procedure Hello is g?i_10Xlp
begin `a2Oj@jP
Put_Line ("Hello, world!"); C>@~W(IE
end Hello; RN3w{^Ll
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U;6~]0^K
汇编语言 ^#S
}x-~>$:"
x86 CPU,DOS,TASM 7s5?^^
MODEL SMALL "F|OJ@M
IDEAL -NZj : N
STACK 100H :M ix*NCf
r[M]2h
DATASEG :H\6wJ
HW DB 'Hello, world!$' z0HCmj9T
mw`%xID*
CODESEG \J-O b
MOV AX, @data r#]gAG4t\
MOV DS, AX pp#Kb 2*
MOV DX, OFFSET HW w]) bQ7)
MOV AH, 09H gA!-F}x$
INT 21H &6MGPh7T
MOV AX, 4C00H N"T~U\R
INT 21H _:M6~XHo
END n`6 8<ybl5
J*,Ed51&7
c1CP12
x86 CPU,GNU/Linux,NASM Z5-"a?{Y
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). _QBd3B%
;Enter this into "hello.asm" then type: 8+
B. x
;"nasm -f elf hello.asm" bg_Zf7{
;"ld hello.o -o hello" ~?-U
J^#
;"./hello" {*t'h?b
\p@,+ -gX
section .data ;data section declaration ahS*YeS7
msg db 'Hello World!',0AH }PyAmh$@
len equ $-msg ;string length >}O1lsjW:z
X'jEI{1w
section .text ;code section declaration 0V}vVAa(B
global _start ;entry point (start of execution) m2{z
_start: mov edx,len ;string length tJ.LPgfZ
mov ecx,msg ;string start / vje='[!
mov ebx,1 ;file handle: stdout
O\]CfzR
mov eax,4 ;sys_write p4Vw`i+DnH
int 80h ;kernel system call tmK@Veb*a'
k'%c| kx8U
mov ebx,0 ;return value p`Omcl~Q
mov eax,1 ;sys_exit x;Dr40wD@y
int 80h ;kernel system call u/y`M]17
<s+=v!
w69`vK
x86 CPU,Windows,MASM32 dm.?-u;C
.386 $NG}YOP)@
.model flat,stdcall wXXv0OzK
option casemap:none Xj+1]KRN
;Include 文件定义 |m k $W$h
include windows.inc j=dHgnVvj
include user32.inc eiP>?8
includelib user32.lib @/anJrt
include kernel32.inc }
%S1OQC
includelib kernel32.lib A[ /0on5r
;数据段 '4dnC2a]
.data 5
;dg#hO
szCaption db 'A MessageBox!',0 gA2\c5F<
szText db 'Hello,world!',0 XV %L6x
;代码段 *[W! ng
.code bMkn(_H)\
start: <LZvG IMl
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 3{on$\
invoke ExitProcess,NULL # dW$"u
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> f:"es: Fb
end start #hR}7K+@
A>7'W\R
O%(:8nIgZ
AWK \RMYaI^+;
BEGIN { print "Hello, world!" } u33+ ikYv
X-oou'4<
3{d1Jk/S
BASIC RXl52#:
传统版BASIC(例如GWBASIC): X@af[J[cQ
b%,5B
10 PRINT "Hello, world!" A{9Hm:)
20 END r1ctW#\~8
B`RbXk68q
或在提示符输入: a/_sL(F{
"M_X9n_
?"Hello, world!":END 5>}L3r>a;
o~<fw]y
现代版BASIC(例如Quick BASIC): oc\rQ?
}4_izKS
Print "Hello, world!" 7i334iQZ
O+.V,`O
以下的语句在Quick BASIC中同样有效: 4d0PW#97.
wGnjuIR
? "Hello,world!" 3iH!;`i
}Ax$}#
rm3~]
BCPL RG:ct{i
GET "LIBHDR" !ybEv| =
8C4Tyms
LET START () BE MfeW|
$( K.l?R#G`,F
WRITES ("Hello, world!*N") *1; <xeVD
$) ",&}vfD4M
_a15R/S
j]Rl1~+M
Befunge m>zUwGYEu
"!dlrow olleH">v us`hR!_
, JguE#ob2
^_@ IO^O9IEx,
JO+ hD4L
fcJ#\-+E
Brainfuck 6G@_!i*2F
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< T`a [~:
+++++++++++++++.>.+++.------.--------.>+.>. l4;/[Q>Z
sHQe0"Eo
r^*,eF
C _e ~EQ[,
#include <stdio.h> <0R?#^XBZB
u^ngD64
int main(void) : ]CZS
{ Xg,E;LSF8
printf("Hello, world!\n"); >L&>B5)9
return 0; N1#*~/sXh
} ]0m4esK`
VCbnS191*
OWOj|jM
C++ G;fP
#include <iostream> t&0n"4$d'
[R
A=M
int main() !i)?j@D
{ %0:
(''
std::cout << "Hello, world!" << std::endl; NwT3e&u%|
return 0; dVO|q9 /
} tV#x{DN
I!# 42~\
Gt6$@ji4u
C++/CLI tQ?? nI2
int main() oB_{xu$6|
{ R['qBHQ?
System::Console::WriteLine("Hello, world!"); +(cs,?`\
} TmzEZ<} &7
x,>@IEN7
j24BB}mBB
C# (C Sharp) DOU\X N
class HelloWorldApp 5Z`f)qE
{ 5G\vV]RR&
public static void Main() /JR*X!&"
{ pw- C=MY]
System.Console.WriteLine("Hello, world!"); `n5)oU2q
} !n)2HDYhx,
} "'6KQnpZ
eW7;yH
lD
!^MqK
COBOL \i`/k(
IDENTIFICATION DIVISION. E8FS jLZ
PROGRAM-ID. HELLO-WORLD. tgg*6lc
gfih;i.pY
ENVIRONMENT DIVISION. s\>$ K%!H?
#MOEY|6
DATA DIVISION. #1V vK
<5C3c&sds
PROCEDURE DIVISION. 4\Q ?4ZX
DISPLAY "Hello, world!". ']}ZI 8
STOP RUN. Bz7T1B&to
$+7MY-9T
'H*S-d6V
Common Lisp 6AZ/whn#
(format t "Hello world!~%") Pfi '+I`s
bX5>qqB]
1{nXmtvr
DOS批处理 Y}nE/bmx&9
@echo off 8Jxo;Y
echo "Hello, world!" 'y;[
fwo7
/o8h1L=
7c+TS--
Eiffel %Vive2j C
class HELLO_WORLD %3z-^#B=
MK~viSgi
creation /p X\)wi
make e:!&y\'"9
feature Cd6^aFoK!
make is LA"`8
local }v@w(*)h:
io:BASIC_IO #,!.e
do (B,CL222x
!!io [",W TZ:
io.put_string("%N Hello, world!") =wI,H@
end -- make uF@Q8 7G
end -- class HELLO_WORLD 8~rD#8`6j
tR0o6s@v/<
S
G]e^%i
Erlang ]hv4EL(zi
-module(hello). `){*JPl
-export([hello_world/0]). ,}`II|.oB
Sn" 1XU
hello_world() -> io:fwrite("Hello, World!\n"). (AXSQI~y
3VALrb;
m:Z=: -x
Forth \f@PEiARG7
." Hello, world!" CR -i?!em'J
HtmJIH:
oACuI|b
Fortran a.wRJ
WRITE(*,10) mY;Y$fz;xL
10 FORMAT('Hello, World!') dO rgqz`e
STOP [^~Fu9+"
END H4^-M Sw
M<g>z6
LuR.; TiW
HTML 9$UjZ$ v
<HTML> .T4"+FTzP
<HEAD> NaB8cLURp
<TITLE> Hello World! </TITLE> 7(Y!w8q&^
</HEAD> {gK
i15t
<BODY> J/R=O>
<p>Hello World!</p> ?sp
</BODY> S-'iOJ1]
</HTML> 0(:"q!h
/>K$_T/]
:4&qASn
HQ9+ xJN
JvA
H Lgvmk
BNuzlR
Z"% =
INTERCAL s 6vsV
PLEASE DO ,1 <- #13 &xrm;pO
DO ,1 SUB #1 <- #238 "fr B5[
DO ,1 SUB #2 <- #112 9(ANhG
DO ,1 SUB #3 <- #112 _%z)Y=Q
DO ,1 SUB #4 <- #0 Vk@u|6U'
DO ,1 SUB #5 <- #64 QZt/Rm>W0
DO ,1 SUB #6 <- #238 Hz%#&E
DO ,1 SUB #7 <- #26 &{/ `Q,
DO ,1 SUB #8 <- #248 p>|;fS\`@}
DO ,1 SUB #9 <- #168 B.0(}@
DO ,1 SUB #10 <- #24 yxLGseD
DO ,1 SUB #11 <- #16 KzI$GU3
DO ,1 SUB #12 <- #158 '1^\^)&q
DO ,1 SUB #13 <- #52 U#d",s
PLEASE READ OUT ,1 t<~riFs]
PLEASE GIVE UP ~U ?cL-`n
'zi5ihiT
&tHT6,Xv(
Java "2N3L8?k
public class Hello GT<Y]Dk
{ H@,jNIh~h
public static void main(String[] args) Gvl-q1PVC
{ X2q$i
System.out.println("Hello, world!"); @M:j~
} {$oZR"MP
} (9fq UbG
V5qvH"^
+%$!sp?
JSP m"X0Owx
<% :}o0Eb
out.print("Hello, world!"); )?I1*(1{A
%> .nKyB'uV
"4&HxD8_ih
}g5h"N\$o
MIXAL o24`5Jdh
TERM EQU 19 the MIX console device number X.%Xi'H
ORIG 1000 start address z#8GF^U:T
START OUT MSG(TERM) output data at address MSG tJ bOn$]2"
HLT halt execution CPFd 33
MSG ALF "MIXAL" -O^ b
ALF " HELL" ZTMzL%i
ALF "O WOR" T_y 'cvh
ALF "LD " 6=MejT
END START end of the program P[%
W[E<
86vk"
Rfeiv
Nuva fPZBm&`C
<..直接输出..> qYGnebn@\
Hello, world! MU-ie*+
cQ1oy-paD
<..或者..> ce1KUwo]
'O
\YL(j_e
<. v9u/<w68!
// 不带换行 ~EpMO]I
? "Hello, world!" ^['% wA%
ofj7$se
// 或者 g@`14U/|
CZxQz
// 带换行 no)Spo'
?? 'Hello, world!' c{V0]A9VF
.> +mMn1&
e7>)Z
()}O|JL:K
OCaml ;)u}`4~L
let main () = UVxE~801Y
print_endline "Hello world!";; mQ('X~l
]i=-/
T5Sa9\`>
Pascal [/6$P[
program Hello; eP(%+[g
begin 'g|%Ro/
writeln('Hello, world!'); gE`G3kgn{
end. Ej F< lw
lk1c2
05=O5<l
Perl ~pX&>v\T
#!/usr/local/bin/perl i ao/l
print "Hello, world!\n"; `a3q)}*Y
<@A/`3_O)
L!3{ASIN0
PHP ^qIp+[/'
<?php mhnD1}9,Ih
print("Hello, world!"); `0=0IPVd
?> o3]B/
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