“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。 p*0[:/4
hJ xL|5Uo
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》。 /J-'[Mc'D[
xkRMg2X.>9
以下是用不同语言写成的Hello World程序的几个例子: kqih`E9P7B
Ada 1i$VX|r
with Ada.Text_Io; use Ada.Text_Io; 7\%JJw6h
procedure Hello is 1Mp-)-e
begin HBe*wk Pd
Put_Line ("Hello, world!"); Sk+XBX(}
end Hello; axUj3J>
1-E6ACq
r9{@e^Em
汇编语言 2k<#e2
7OmT^jV2
x86 CPU,DOS,TASM ds!nl1
MODEL SMALL I{dy,\p
IDEAL j36YIz$a
STACK 100H cX
C [O
GgY8\>u
DATASEG
,==_u
HW DB 'Hello, world!$' v}u]tl$,
!0?o3,of-
CODESEG ^7+;XUyg
MOV AX, @data 'u v=D
MOV DS, AX d*s*AV
MOV DX, OFFSET HW ZcjLv
MOV AH, 09H oH6zlmqG"
INT 21H ZH\t0YhrVe
MOV AX, 4C00H (4 ZeyG@
INT 21H o+{,>t
END AA[1[
Jfr'OD2$ %
WT,I~'r=S
x86 CPU,GNU/Linux,NASM bT 42G[x
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). C lf;+G0
;Enter this into "hello.asm" then type: {H[N|\
;"nasm -f elf hello.asm" 7d>w]R,Z
;"ld hello.o -o hello" af |mk@
;"./hello" 6k;5T
"|Q.{(|kO1
section .data ;data section declaration E<+ G5j
msg db 'Hello World!',0AH ~{lb`M^]h
len equ $-msg ;string length :5/Ue,~ag
EF:ec9 .
section .text ;code section declaration dlfjx
global _start ;entry point (start of execution) M}[Q2v\
_start: mov edx,len ;string length _f@,)n
mov ecx,msg ;string start 6agG*x
mov ebx,1 ;file handle: stdout 8a8a:d
mov eax,4 ;sys_write k@lJ8(i^qU
int 80h ;kernel system call SeXgBbGAne
9Zl4NV&B
mov ebx,0 ;return value z9IW&f~~P
mov eax,1 ;sys_exit u]NsCHKlT
int 80h ;kernel system call c>D~MCNxg
UZs '[pm)
Jkj7ty.J
x86 CPU,Windows,MASM32 9*s8%pL
.386 |
CFG<]
.model flat,stdcall y%%VJ}'X!
option casemap:none [ ?7QmZK
;Include 文件定义 m
uO.
include windows.inc {2:baoG-
include user32.inc ?aTH<
includelib user32.lib QEqYqAGzu|
include kernel32.inc Mu`_^gG
includelib kernel32.lib eG(YORkR
;数据段 /~'C!so[v
.data Wo&22,EB
szCaption db 'A MessageBox!',0 +I5\`By=
szText db 'Hello,world!',0 uxL+oP0
;代码段 QDY uJ&!h
.code ]>)shH=Yx
start: l[[`-f8j
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK H][TH2H1
invoke ExitProcess,NULL
:MF`q.:X
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> kum@cA
end start xL_QTj
%TN$
."dT6u E
AWK OAq-(_H
BEGIN { print "Hello, world!" } 5(CInl
YG0/e#5
yWRIh*>nE
BASIC Qc*p+N+$
传统版BASIC(例如GWBASIC): %52e^,//
XuJyso9kA
10 PRINT "Hello, world!" HqV55o5f'
20 END PH%t#a!j3/
vT{(7m!Ra
或在提示符输入: p9i7<X2&
`TO Xktj
?"Hello, world!":END hb*Y-$Zp
c$[2tZ
现代版BASIC(例如Quick BASIC): ek5j;%~g1
_$T
!><)y
Print "Hello, world!" ~\-=q^/!
b~fl,(sZp
以下的语句在Quick BASIC中同样有效: <#BK(W~$
y]{b4e
? "Hello,world!" ?yAb=zI1b
A*0X~6W
k8ILo)
BCPL 4S4MQ
GET "LIBHDR" 3"Oipt+
STu(I\9
LET START () BE R-pON4D"*
$( 1d49&-N
WRITES ("Hello, world!*N") L>/$l(
$) -ABj>y[
U*K4qJ6U
,s%+vD$O^
Befunge RvA "ug.*
"!dlrow olleH">v phb
;D
, )OQm,5F1
^_@ J ##a;6@
Y_]y :H
W<&/5s
Brainfuck 5KB Z-,
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< (BH<\&yHE
+++++++++++++++.>.+++.------.--------.>+.>. n+=7u[AZi
%6fnL~A
n,2 p)#?
C :f Rta[
#include <stdio.h> +~F>:v?Rh
AiR#:r
int main(void) w ;$elXP|
{ dAG@'A\f
printf("Hello, world!\n"); iDDq<a.A
return 0; >j]Gz-wC
} vRaxB
4
w*m]D{
$U ._4
C++ B_Gcz5
#include <iostream> _\dC<K *>
i885T'
int main() :twp95{R1
{ M1P;x._n
std::cout << "Hello, world!" << std::endl; cyd_xB5K
return 0; A#q.)8
} ^WWr8-
&/' O?HWl
>9nVR
C++/CLI .3+8Ip#z
int main() ~g[D!HV|yu
{ zuMz6#aCC8
System::Console::WriteLine("Hello, world!"); `TF3Ho\MC
} Ro$*bN6p
kQ\l7xd
o\tw)_ >
C# (C Sharp) s!gVY!0
class HelloWorldApp &9v8
{ !N\_D
public static void Main() cc=_KYZ1k
{ -2laM9Ed
System.Console.WriteLine("Hello, world!"); :k_)Bh?+
} #Z]Cq0=
} h3>u[cX%
?zsRs?rc0
D)L~vA/8b
COBOL 1A;,"8kBd
IDENTIFICATION DIVISION. XH0Vs.w
PROGRAM-ID. HELLO-WORLD. c;29GHs2
#WDpiV7B
ENVIRONMENT DIVISION. Qe7
SH{
KIuj;|!q
DATA DIVISION. k%-y\WM
JeVbFZ8
PROCEDURE DIVISION. wuCZz{c7
DISPLAY "Hello, world!". PCDvEbpG
STOP RUN. 'q/C: Yo
hn6'$P
~tNk\Kkv
Common Lisp g~|x^d^;|
(format t "Hello world!~%") =<M>fJ)
o}wRgG
bjj
F{T
DOS批处理 Ub\&k[F
@echo off DKlHXEt>
echo "Hello, world!" 01aw+o
_wg~5'w8
v7+|G'8M`
Eiffel kiin7 8W
class HELLO_WORLD iRW5*-66f
.aK=z)
creation \8{Tj54NA
make 2l+'p[b0>
feature "AWk
jdj
make is K;`*n7=IA
local Iw$T'I+4W
io:BASIC_IO w3fD6$
do Uq%|v
!!io "$"<AKCwS
io.put_string("%N Hello, world!") x )q$.u+
end -- make ~Wm'~y>
end -- class HELLO_WORLD E/% F0\B
I2z7}*<u
Ra~:O\Z
Erlang ;%>X+/.y0
-module(hello). Ex}TDmTu
-export([hello_world/0]). u0uz~ s
3WfZ zb+
hello_world() -> io:fwrite("Hello, World!\n"). @6U&7!
u7p:6W
2<2a3'pG
Forth v!mP9c
j
." Hello, world!" CR phwq#AxQ
-42 U
!P6y_Frpe
Fortran ri9n.-xs
WRITE(*,10) Eh`W J~
10 FORMAT('Hello, World!') at3YL[,[Z
STOP #TP Y%
END Uzn
I= z+`o8
.lcgM
HTML ,*p(q/kJh~
<HTML> !<-+}X+o8$
<HEAD> ?GZ?HK|
<TITLE> Hello World! </TITLE> b DF_
</HEAD> R, zp&L
<BODY> D{t0OvQag
<p>Hello World!</p> h!hv{c
</BODY> .R^]<b:`
</HTML> $- Z/UHT
xA}{ZnTbN
i079 V
HQ9+ @6b;sv1W
H SYOU&*
?N%5c%oF
mvtuV`
INTERCAL Ga*
PLEASE DO ,1 <- #13 URTJA<r8D
DO ,1 SUB #1 <- #238 twTRw:.!f
DO ,1 SUB #2 <- #112 cja-MljD
DO ,1 SUB #3 <- #112 XoiZ"zE
DO ,1 SUB #4 <- #0 PzLV}
DO ,1 SUB #5 <- #64 -1!s8G
DO ,1 SUB #6 <- #238 ;u%4K$
DO ,1 SUB #7 <- #26 3'`X_C|d53
DO ,1 SUB #8 <- #248 Ly/5" &HD
DO ,1 SUB #9 <- #168 eR8>5:V_
DO ,1 SUB #10 <- #24 'ka"0~:NS{
DO ,1 SUB #11 <- #16 yD ur9Qd6
DO ,1 SUB #12 <- #158 lzZ=!dG
DO ,1 SUB #13 <- #52 5g4c1K
PLEASE READ OUT ,1 4_Rv}Yd
PLEASE GIVE UP k1WyV_3
]0p*EB=C*
%{P." ki
Java -| t|w:&
public class Hello OoAZ t
{ gkv,Om
public static void main(String[] args) ![_GA)7
{ jM(!!AjpC
System.out.println("Hello, world!"); RQ51xTOL4]
} 'nqVcNgb
} 5z:/d `P[
%gx>|
YWa9|&m1
JSP Jbz>j\
<% $Jj0%?;
out.print("Hello, world!"); Tb]' b
%> SB!m&;Tb
o&:n>:im
%PU{h
MIXAL >qIZ
TERM EQU 19 the MIX console device number KTu&R6|
ORIG 1000 start address a<V* )
START OUT MSG(TERM) output data at address MSG V -9z{
HLT halt execution qS2]|7q?Tc
MSG ALF "MIXAL" CW#$%
ALF " HELL" X7"hTD
ALF "O WOR" t~]oJ5%
ALF "LD " %^8>=
END START end of the program ~;Xkt G:
I*i$!$Bx2
b(gcnSzM2
Nuva m-!z(vcn
<..直接输出..> ]r1C
Hello, world! 2$%0~Z5
\~q cYp
<..或者..> &@xeWB
vui{["
<. Sst`*PX:
// 不带换行 l{x?i00tAS
? "Hello, world!" Tn3f5ka'
su]ywVoRT
// 或者 (wsvj61
j~Xn\~*n
// 带换行 4&LoE~
?? 'Hello, world!' TMQu'<?V
.> O/R>&8R$
}u7&SU
q&wXs