“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。 h.nz kp5
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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》。 *RPI$0
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以下是用不同语言写成的Hello World程序的几个例子: C$8=HM3
Ada Sc&_6}K
with Ada.Text_Io; use Ada.Text_Io; S:gP\Atf>
procedure Hello is # V+e
begin * 7CI q
Put_Line ("Hello, world!"); 8Ex0[e
end Hello; bTj,5,8i
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汇编语言 8Xr"4;}f+
C}CX n X
x86 CPU,DOS,TASM v!2`hqO
MODEL SMALL "2mVW_k
IDEAL F>OYZOC]
STACK 100H Jy9&=Qh
3I]5DW %-
DATASEG sMZ \6
HW DB 'Hello, world!$' FE`J.aw^X
XZhhr1-<a
CODESEG uJQeZEe
MOV AX, @data /=%4gWtr
MOV DS, AX >|<6s],v
MOV DX, OFFSET HW J{H475GqiT
MOV AH, 09H gb-n~m[y
INT 21H a`}-^;}SW
MOV AX, 4C00H !T}`h'
INT 21H C4y<+G.`
END pxgv(:Tw
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4_$f"6
x86 CPU,GNU/Linux,NASM AWw:N6\
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). T"O!
;Enter this into "hello.asm" then type: '?\Hm'8
;"nasm -f elf hello.asm" xed$z
;"ld hello.o -o hello" @_;6L
;"./hello" uaiG(O
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section .data ;data section declaration ^pn:SV
msg db 'Hello World!',0AH s:%>H|-
len equ $-msg ;string length NFQ0/iuW
l1@:&j3h
section .text ;code section declaration "YivjHa7H
global _start ;entry point (start of execution) K.z@Vx.
_start: mov edx,len ;string length Q,>AT$|
mov ecx,msg ;string start i+OyBDkJM!
mov ebx,1 ;file handle: stdout H=0Y4 T@)T
mov eax,4 ;sys_write [.2>=3T
int 80h ;kernel system call fSj^/>
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mov ebx,0 ;return value 74Lq!e3hMF
mov eax,1 ;sys_exit B|!Re4`0
int 80h ;kernel system call d6uL;eR
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x86 CPU,Windows,MASM32 wDn5|F}i&
.386 "F=O
.model flat,stdcall _]B'C
option casemap:none 5'X.Z:
;Include 文件定义 ZW2U9
include windows.inc ur;8uv2o
include user32.inc &Oe,$%{hBh
includelib user32.lib $ #CkI09
include kernel32.inc VQ+Xh
includelib kernel32.lib %.]qkGZe#
;数据段 +ft?aB@
.data =h4XsV)rO
szCaption db 'A MessageBox!',0 &",pPuq
szText db 'Hello,world!',0 d35 ,[
;代码段 %GJ,&b|
.code ?]:3`;h3
start: By"
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invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK }_K7}] 1
invoke ExitProcess,NULL JD.WH|sZ5
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ?>2k>~xlQ
end start hW(Mf
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vFQ'sd]C
AWK b?y3m +V`
BEGIN { print "Hello, world!" } u\50,N9Wp{
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BASIC 1%H]2@
传统版BASIC(例如GWBASIC): 8!1vsEqv
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10 PRINT "Hello, world!" M5wj79'l"
20 END SwLul4V
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或在提示符输入: $Die~rPU
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?"Hello, world!":END d&F8nBIM5
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现代版BASIC(例如Quick BASIC): ~qs97'
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Print "Hello, world!" O",:0<
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以下的语句在Quick BASIC中同样有效: 2-FL&DE
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? "Hello,world!" ;8H
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BCPL 0:Xvch0
GET "LIBHDR" UE5T%zd /
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LET START () BE tAefBFu
$( SZNM$X|T
WRITES ("Hello, world!*N") Eb[*nWF=
$) }! x\qpA
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Befunge Y$shn]~
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++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< `$7.(.#s
+++++++++++++++.>.+++.------.--------.>+.>. uPhFBD7
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C gh#9<
#include <stdio.h> xx_]e4
g ?qm >X
int main(void) 1ve
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{ HTAJn_
printf("Hello, world!\n"); e<#t]V
return 0; 9 "7(Jq
} l~.ae,|7
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C++ )%I2#Q"Nt-
#include <iostream> [LbUlNq^B@
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int main() Kf/1;:^
{ fYBmW')
std::cout << "Hello, world!" << std::endl; KEEHb2q
return 0; >+ulLQqe
} nkUSd}a`r
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C++/CLI hCS|(8g
int main() 4$ya$Y%s%
{ e0Zwhz,
System::Console::WriteLine("Hello, world!"); ihS;q6ln
} wylbs@
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C# (C Sharp)
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class HelloWorldApp DryN}EMOKD
{ MEf`&<t
public static void Main() M{w[hV
{ `lygJI?H+{
System.Console.WriteLine("Hello, world!"); *:L-/Q)i
} Q]?r&%Y
} ;6P#V`u
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COBOL E{'{fo!#)
IDENTIFICATION DIVISION. '#pY/,hVB
PROGRAM-ID. HELLO-WORLD. Myaj81
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ENVIRONMENT DIVISION. 'RZ=A+% X
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DATA DIVISION. >zx]%
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PROCEDURE DIVISION. 1$mxMXNsJ
DISPLAY "Hello, world!". 'Km
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STOP RUN. 2^RWGCEv
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Common Lisp 6:_@ ;/03%
(format t "Hello world!~%") `<_A#@
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DOS批处理 JWQd/
@echo off 5yBaxw`
echo "Hello, world!" YD>5zV%!D
3h N?l
:/b
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Eiffel =ie8{j2:
class HELLO_WORLD Lxz!>JO>
qTxw5.Ai!
creation cC@.&
make D#"BY;
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feature YNHQbsZUI,
make is dZ^(e0& :H
local _7e ^
t N
io:BASIC_IO ye?4^@u u
do
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!!io ygI81\D
io.put_string("%N Hello, world!") t3LRmjL
end -- make H[oCI|k
end -- class HELLO_WORLD Jzu U
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Erlang TgC8EcLr
-module(hello). a*
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-export([hello_world/0]). j`H5S
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hello_world() -> io:fwrite("Hello, World!\n"). *49({TD6`
[k<"@[8)
V/N:Of:\R
Forth lSW6\jX
." Hello, world!" CR F"I{_yleq'
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[te9ui%JS
Fortran CB!5>k+mC
WRITE(*,10) F6'[8f
10 FORMAT('Hello, World!') 7c.96FA
STOP Jeb"t1.$
END HV0! G-h
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HTML s<#["K*_
<HTML> x{'3eJ^8
<HEAD> BeR7LV
<TITLE> Hello World! </TITLE> nf%"7 y{dd
</HEAD> dio<?6ZD9P
<BODY> m%$GiNs}
<p>Hello World!</p> ioJ~k[T
</BODY> {:@MBA34
</HTML> @'5*u~M
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INTERCAL JyiP3whW
PLEASE DO ,1 <- #13 W'98ues%
DO ,1 SUB #1 <- #238 E\$7tXQK6
DO ,1 SUB #2 <- #112 ox|K2A
DO ,1 SUB #3 <- #112 :NCY6?
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DO ,1 SUB #4 <- #0 s8O.yL
DO ,1 SUB #5 <- #64 (Ci{fY6`
DO ,1 SUB #6 <- #238 J`I^F:y*
DO ,1 SUB #7 <- #26 !PySYY
DO ,1 SUB #8 <- #248 bY@ S[
DO ,1 SUB #9 <- #168 ;~^9$Z@%Q
DO ,1 SUB #10 <- #24 BI|BfO%F$j
DO ,1 SUB #11 <- #16 j:Y1
DO ,1 SUB #12 <- #158 dGc<{sQzB
DO ,1 SUB #13 <- #52 jWUpzf)q=T
PLEASE READ OUT ,1 }piDg(D
PLEASE GIVE UP +KcD Y1[
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Java ezz;NH
public class Hello b'5]o
{ dRhsnT+KX
public static void main(String[] args) j]6c_r3
{ 178u4$# b
System.out.println("Hello, world!"); :6T8\W
} AcoU.tpP
}
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JSP ;:`0:Ao.
<%
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out.print("Hello, world!"); 6he (v
%> G+k~k/D 6
1s "/R
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MIXAL Yw!(]8PYdU
TERM EQU 19 the MIX console device number 1woBw>g
ORIG 1000 start address {hRM=f7
START OUT MSG(TERM) output data at address MSG Fv!KLw@
HLT halt execution USDqh437
MSG ALF "MIXAL" o6b\
w
ALF " HELL" f3E%0cg
ALF "O WOR" >Nho`m(
ALF "LD " kv8
/UW
END START end of the program MJ%gF=$X
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Nuva /4xp?Lo:
<..直接输出..> v:xfGA nP
Hello, world! ^_0l(ke
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<..或者..>
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Z\1wEGP7{
<. USrBi[_ci\
// 不带换行 bMjE@S&
? "Hello, world!" ajJ+Jn\
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// 或者 7O\sQ]i6
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// 带换行 dH[T nqJn
?? 'Hello, world!' 2 y;J 11\
.> %fzZpd]v=,
D,( "3zx
s0/[mAY
OCaml Wf>P[6
let main () = O\z]1`i*o
print_endline "Hello world!";; P_y8[Y]?
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Y5&mJp\G
Pascal o)U4RY*
program Hello; H%&e[PU
begin 6~O9|s^38w
writeln('Hello, world!'); /l.ox.4z#
end. x[m&ILr
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Perl {zmh0c;|
#!/usr/local/bin/perl #CcC& I
:c
print "Hello, world!\n"; w1q`
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>`S $(f
PHP ~L55l2u7
<?php q2U8]V U)
print("Hello, world!"); MzP
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?> )_-EeH
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