“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。 l(*`,-pv:
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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》。 bF<FX_}!s!
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以下是用不同语言写成的Hello World程序的几个例子: }H\wed]F/
Ada M2{{B^*$6
with Ada.Text_Io; use Ada.Text_Io; ]~GwZB'M
procedure Hello is )} tI8
begin Il,2^54q
Put_Line ("Hello, world!"); h#B%'9r
end Hello; ,A4v|]kq]
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汇编语言 ]*D=^kA0[
IyOb0WiEj
x86 CPU,DOS,TASM ol[
MODEL SMALL 4Un (}P'
IDEAL S&q@M
STACK 100H Mnc9l ^
JN,4#,
DATASEG ^cn%]X#.
HW DB 'Hello, world!$' Il `35~a
}CIH1q3P
CODESEG WRe9ki=R
MOV AX, @data `8/K+ e`
MOV DS, AX k+t?EZ6L
MOV DX, OFFSET HW )w4i0Xw^C:
MOV AH, 09H ~+
Mp+gE
INT 21H -XRn%4EX?
MOV AX, 4C00H \QGh@AQp"
INT 21H Y{ijSOl3
END )[oegfnn-
N2#Wyt8MC
'1'De^%6W
x86 CPU,GNU/Linux,NASM Y23- Im
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). oc7&iL
;Enter this into "hello.asm" then type: AY<(`J{
;"nasm -f elf hello.asm" HRn
Q*
;"ld hello.o -o hello" %-1-y]R|
;"./hello" @y]ek/
VKqIFM1b
section .data ;data section declaration _)XQb1]
msg db 'Hello World!',0AH
Tr* 3:J }
len equ $-msg ;string length ,1&Pb %}
g(& hu S
section .text ;code section declaration '"qTmo!
global _start ;entry point (start of execution) mSdByT+dG
_start: mov edx,len ;string length :#7"SEud}
mov ecx,msg ;string start C9OEB6
mov ebx,1 ;file handle: stdout e ?sMOBPlv
mov eax,4 ;sys_write nvY%{Zf$}
int 80h ;kernel system call MVP|l_2!
_Wg?H:\
mov ebx,0 ;return value 'guXdX]Gu
mov eax,1 ;sys_exit Td(eNe_4T
int 80h ;kernel system call X$BN&DD
fqpbsM;M]
Pu>jECcz
x86 CPU,Windows,MASM32 >>bsr#aJ
.386 ![1+=F!
.model flat,stdcall :8h\x
option casemap:none -Y>,\VEK
;Include 文件定义 &YpViC4K.
include windows.inc &rs
include user32.inc {G. W?
includelib user32.lib Jui:Ms
include kernel32.inc }$%j} F{
includelib kernel32.lib BA(erf>
;数据段 ~?#>QN\\c
.data F \0>/
szCaption db 'A MessageBox!',0 n#$sLXVy
szText db 'Hello,world!',0 5ir
Ffr
;代码段 L)(JaZyV5
.code >f$NG
start: #K#BNpG|
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK /|s~X@%K
invoke ExitProcess,NULL 27J!oin$
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ;z2\ Q$
end start ?qC6p|H
vbBNXy/
#
RoJD:9
AWK NVnId p
BEGIN { print "Hello, world!" } L!;"73,&(8
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05>mR qVL
BASIC c~``)N
传统版BASIC(例如GWBASIC): f4 k
'Dn\.x^]1
10 PRINT "Hello, world!" [J!jp&o
20 END ~F"<N q
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或在提示符输入: *qa.hqas
S4 j5-
?"Hello, world!":END Jn7T5$pJ
>V%lA3
现代版BASIC(例如Quick BASIC): 6;:z?Q
=e)t,YVm
Print "Hello, world!" pq"Z,9,F%
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以下的语句在Quick BASIC中同样有效: OI^??joQ
^ YOCHXg
? "Hello,world!" PfR|\{(
v*";A
;NMv>1fI
BCPL y`,;m#frT
GET "LIBHDR" jFDVd;#CS
I=[Ir8};
LET START () BE 9| g]M:{
$( DHq#beN
WRITES ("Hello, world!*N") l*>,K2F
$)
s5/u>d
*"nN To
'\O[j*h^.
Befunge )-\C{>
"!dlrow olleH">v ]-j.\+(*
, oBO4a^D
^_@ 9r.h^
'aWqj+Wbh
LD*XNcE
Brainfuck /8#e < p
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ;9CbioO
+++++++++++++++.>.+++.------.--------.>+.>. a,|Hn
<78*-Ob
5jq @ nq6
C kzk8b?rOA
#include <stdio.h> jn4|gQ
25PZ&^G8%
int main(void) J`]9n>G
{ ;kI)j
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printf("Hello, world!\n"); 4Ei8G]O
$_
return 0; [g bFs-B2/
} Sa[?B
=X1oB,W{
!,+<?o y
C++ XJ!?>)N .
#include <iostream> )1f%kp#]
]]o?!NX
int main() G|oO
{ G} f9:G
std::cout << "Hello, world!" << std::endl; enx+,[
return 0; tQ*?L
} ~GE|,Np
F
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AGl#f\_^
C++/CLI +Wl]1
c/
int main() uO>x"D5tZ:
{ :7M%/#Fy
System::Console::WriteLine("Hello, world!"); l 88n*O
} p()q)P
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K?nQsT;3p
C# (C Sharp) Q'ZZQ
class HelloWorldApp znB+RiV8
{ !1ZItJ74#
public static void Main() ^7uXpqQBr
{ Jkv!]C
System.Console.WriteLine("Hello, world!"); :>}7^1I
} @SH[<c
} XuWX@cK
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COBOL x<`^4|<
IDENTIFICATION DIVISION. lVuBo&
PROGRAM-ID. HELLO-WORLD. Vm?# ~}T
1`1jSx5}.
ENVIRONMENT DIVISION. {Q>4zepN!
>k
==7#P
DATA DIVISION. ow
Zor!hc0<
PROCEDURE DIVISION. =),O ;M
DISPLAY "Hello, world!". ,A&`WE
STOP RUN. YZ]}l%e
g&S>Wq%L
p$G3<Z&7
Common Lisp _Ss}dU9
(format t "Hello world!~%") )Tieef*Q~
.820~b0
tU$n3Bg
DOS批处理 q44vI
@echo off WJxcJE
echo "Hello, world!" a x)J!I18
p TaC$Ne
y4! :l=E^
Eiffel 7Vk9{x$z
class HELLO_WORLD UD8e,/
Rp;"]Q&b
creation "@5qjLz]
make _k :BY
feature '4It>50b
make is ePZAi"k
local s$zm)y5
io:BASIC_IO Y4w]jIv
do fN@ZJ~F%j
!!io P*i'uN
io.put_string("%N Hello, world!") Zn0a)VH%
end -- make KWeE!f 7G
end -- class HELLO_WORLD T{2)d]Y
C:t?HLY)fG
:{^~&jgL
Erlang O8A(OfX
-module(hello). (,ik:j
-export([hello_world/0]). +=Q:g,kP
\D k >dE&I
hello_world() -> io:fwrite("Hello, World!\n"). =>lX brJ
;
wxmSX9
S,C c0)j>
Forth ,}khu
." Hello, world!" CR @ ;@~=w
-T;^T1
Q=>5@sZB
Fortran 3M(*q4A$"
WRITE(*,10) YD@Z}NE
v"
10 FORMAT('Hello, World!') {]U
\HE1w
STOP [3sZ=)G
END "+4Jmf9
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vNs`UkA
HTML p;'.7_1
<HTML> Kxa1F,dZ
<HEAD> }Xk_
xQVt{
<TITLE> Hello World! </TITLE> Sk"hqF.2
</HEAD> ~QlF(@ue
<BODY> "g)bNgGV}
<p>Hello World!</p> ',!jYh}Uxk
</BODY> !Yr9N4
</HTML> ,;5%&T
mn=b&{')e
PNd'21N
HQ9+ Aqmw#X
H [mQ1r*[j
si)>:e
\2=I//YF
INTERCAL m&b1H9ymd
PLEASE DO ,1 <- #13 0:n"A,-p
DO ,1 SUB #1 <- #238 "f<gZsb
DO ,1 SUB #2 <- #112 R2?s
NlF
DO ,1 SUB #3 <- #112 \.oJ/++
DO ,1 SUB #4 <- #0 5M~+F"Hl
DO ,1 SUB #5 <- #64 /\<x8BJ
DO ,1 SUB #6 <- #238 Z*f%R\u
DO ,1 SUB #7 <- #26 bcvm]aPu
DO ,1 SUB #8 <- #248 l`l6Y>c*]
DO ,1 SUB #9 <- #168 ^|zag
DO ,1 SUB #10 <- #24 _68vSYr
DO ,1 SUB #11 <- #16 XkkzY5rxOc
DO ,1 SUB #12 <- #158 !;mn]wR>a
DO ,1 SUB #13 <- #52 TmftEw>u
PLEASE READ OUT ,1 z;P#
PLEASE GIVE UP J)yg<*/3
2}XRqa.|
v0!|TI3s
Java [ `1`E1X
public class Hello }aVzr}!
{ lwgwdB
public static void main(String[] args) Y 'm;xA
{ ]\ !ka/%
System.out.println("Hello, world!"); /*>}y$
} P_0[spmFU
} 9xj }<WM
g 8uq6U
j0X^,ot@m
JSP F .Zk};lb
<% Z3YKG{g
out.print("Hello, world!"); kaQNcMcq
%> uF|_6~g
2A@oa9
DBsoa0w
MIXAL u-y?i`
TERM EQU 19 the MIX console device number ,SNrcwv
ORIG 1000 start address Ipq0
1
+
START OUT MSG(TERM) output data at address MSG ) 3"!Q+
HLT halt execution X<. l(9$
MSG ALF "MIXAL" $0K@=7ms
ALF " HELL" VD@$y^!H
ALF "O WOR" <uS/8MP{
ALF "LD " 3Mm_xYDud
END START end of the program 0SWqC@AR%
W|Sab$h
Iox )-
Nuva b/qK/O8J
<..直接输出..> vdvnwzp!l
Hello, world! Kr'? h'F
l1lYb;C
<..或者..> ; U7P{e05
Cw(yp u
<. D@9 +yu=S
// 不带换行 QD{1?aY
? "Hello, world!" 4U}J?EB?K
GTTEg{
// 或者 OomC%9/=,
l,]%D
// 带换行 |>xuH#Q
?? 'Hello, world!' g.di3GGi
.> G1e_pszD{o
8@LWg d
x:~XZX\mwH
OCaml Rvu5#_P
let main () = %Rf9KQ
print_endline "Hello world!";; =^rp=
Az
$V`1<>4
csLbzDg
Pascal 1Dc6v57
program Hello; 5yK#;!:h
begin d9U)O6=
writeln('Hello, world!'); k ZF<~U
end. CUG"2K9
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