“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。 v9K{oB
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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》。 qH-':|h7
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以下是用不同语言写成的Hello World程序的几个例子: q*B(ZG
Ada h.D*Y3=<
with Ada.Text_Io; use Ada.Text_Io; .ECT
procedure Hello is ?Pw(
begin !;ipLC;e}
Put_Line ("Hello, world!"); "8|a4Y+F
end Hello; aO]FQ#l2b
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汇编语言 >:yU bo)
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x86 CPU,DOS,TASM x&PVsXdt5m
MODEL SMALL ,@*Srrw
IDEAL uY'77,G_J
STACK 100H qqR8E&Y{
fR6.:7&
DATASEG BvA09lK
HW DB 'Hello, world!$' XK7$Xbd
j/+e5.EX/
CODESEG @g~hYc
MOV AX, @data WnL Ma|e
MOV DS, AX ;[>g(W+
MOV DX, OFFSET HW hRWRXC9
MOV AH, 09H J&bhR9sF
INT 21H rBY{&JhS
MOV AX, 4C00H I||4.YT
INT 21H j(SBpM
END 4Ev#`i3~
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x86 CPU,GNU/Linux,NASM 4`Z8EV
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). |-SImxV
;Enter this into "hello.asm" then type: bn8`$FA^
;"nasm -f elf hello.asm" 'YaD=""
;"ld hello.o -o hello" [esR!})
;"./hello" }co*%F{1
RN0=jo!58
section .data ;data section declaration Z<,$XvL
msg db 'Hello World!',0AH <#r/4a"V
len equ $-msg ;string length [V-OYjPAx
{zf)im[.
section .text ;code section declaration |{G GATni
global _start ;entry point (start of execution) YrWC\HR_
_start: mov edx,len ;string length jQc.@^#+x
mov ecx,msg ;string start &/7D4!N]
mov ebx,1 ;file handle: stdout }&h*bim
mov eax,4 ;sys_write @h&crI[c
int 80h ;kernel system call ?UPZ49y
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mov ebx,0 ;return value 609_ZW;)
mov eax,1 ;sys_exit 5lc%GJybV
int 80h ;kernel system call l5R0^!t
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qj:
x86 CPU,Windows,MASM32 S)h0@;q
.386 bim
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.model flat,stdcall jbU=D:|
option casemap:none h/t{=
@
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;Include 文件定义 (pFPuV
include windows.inc ."#M
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include user32.inc ,py:e>+^t
includelib user32.lib X/D^?BKC
include kernel32.inc _FRwaFVJ3
includelib kernel32.lib And|T 6u
;数据段 }>|M6.n "
.data fZ*LxL
szCaption db 'A MessageBox!',0 =Bq3O58+
szText db 'Hello,world!',0 RrPo89o
;代码段 )O~V3a
.code \z4I'"MC.9
start: !7KSNwGu
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK GkT:7`|C
invoke ExitProcess,NULL .1&~@e%=-
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> HaUfTQ8
end start ZM~kc|&
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BEGIN { print "Hello, world!" } E_[)z%&n2
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BASIC ,>^6ztM
传统版BASIC(例如GWBASIC): <r{M(yZ?@
>pVrY;
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10 PRINT "Hello, world!" RKY~[IQ,
20 END 9EE},D
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或在提示符输入: Y}/e"mp
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?"Hello, world!":END -666|pA
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现代版BASIC(例如Quick BASIC): 6^oQ8unmS
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Print "Hello, world!" P a{)@xT
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以下的语句在Quick BASIC中同样有效: _7O;ED+
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? "Hello,world!" \;h+:[<e1
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?ep'R&NV
BCPL A@W/
GET "LIBHDR" /ox9m7Fz7
QB Nnvg4v
LET START () BE b~1]}9TJ
$( g@va@*|~d
WRITES ("Hello, world!*N") 0! :1o61
$) [`_ZlC
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Befunge Q bg,q
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Brainfuck D};zPf@!p
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 7^fpbrj
+++++++++++++++.>.+++.------.--------.>+.>. O%g%*9
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C abHW[VP9
#include <stdio.h> VPKoBJ&
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int main(void) fVU9?^0/)9
{ yN0!uzdW*
printf("Hello, world!\n"); f?ImQYqP
return 0; nZfU:N
} V>{G$(v$
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C++ q*Hf%I"
#include <iostream> w/L^w50pt
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int main() D*>EWlZ
{ 3H_mR
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std::cout << "Hello, world!" << std::endl; y;!q E~!3
return 0; `Jvy~T
} bN,>,hj
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C++/CLI C)7T'[
int main() +B
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{ WMo
System::Console::WriteLine("Hello, world!"); YpAJ7E|7
} ~{#$`o=
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C# (C Sharp) ~\4B 1n7
class HelloWorldApp aKLA_-E
{ Zy}Qc")Z
public static void Main() D^?jLfW8
{ M
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System.Console.WriteLine("Hello, world!"); cB;:}Q08#
} 4@K9%
} 6I$laHx?
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COBOL ;B 35E!QJ
IDENTIFICATION DIVISION. YWV"I|Z
PROGRAM-ID. HELLO-WORLD. LqH<HGMFD
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ENVIRONMENT DIVISION.
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DATA DIVISION. @}
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B? Vr9H 7n
PROCEDURE DIVISION. S~dD ;R
DISPLAY "Hello, world!". fpjy[$8
STOP RUN. #Ub"Ii
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Common Lisp Zu4|1W
(format t "Hello world!~%") h>'9-j6B
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%
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DOS批处理 %idn7STJ}
@echo off 1]yOC)u"i
echo "Hello, world!" E%eTjvvxus
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jWn!96NhlL
Eiffel SIJ:[=5!7
class HELLO_WORLD 6.o8vC/PZ
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creation xbh4j!FD$
make l7 +#gPA
feature
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make is -BY'E$]4
local bYuQ"K
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io:BASIC_IO 0_}^IiG
do j\^0BTZ
!!io Oz\mIVC#
io.put_string("%N Hello, world!") R W=<EF&
end -- make 6GxQ<
end -- class HELLO_WORLD
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Erlang
h8b*=oq
-module(hello). s6#@S4^=\
-export([hello_world/0]). ZS&n,<a5L}
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hello_world() -> io:fwrite("Hello, World!\n"). hK!Z~
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;j#$d@VG"
Forth FmfPi
.;1
." Hello, world!" CR ?'xTSAn
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Fortran {U$qxC]M
WRITE(*,10) v&6=(k{E@R
10 FORMAT('Hello, World!') hjuzVOE|W
STOP _%HpB=
END 81\$X
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HTML MA:2]l3e
<HTML> Hpo/CY/
<HEAD> /UJ@e
<TITLE> Hello World! </TITLE> 87/!u]q
</HEAD> }uI(D&?+h
<BODY> A),nkw0X
<p>Hello World!</p> E$$pO.\
</BODY> Mo+mO&B
</HTML> y-UutI&
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INTERCAL _ n.2'
PLEASE DO ,1 <- #13 "W_C%elg
DO ,1 SUB #1 <- #238 _1z|QC
DO ,1 SUB #2 <- #112 4dDDi,)U
DO ,1 SUB #3 <- #112 F^5<o
DO ,1 SUB #4 <- #0 VS$ZR'OP0
DO ,1 SUB #5 <- #64 O|#N$a&_N
DO ,1 SUB #6 <- #238 t@GPB]3[
DO ,1 SUB #7 <- #26 A#s`!SNv
DO ,1 SUB #8 <- #248 x\=2D<@az
DO ,1 SUB #9 <- #168 ]J^9iDTTA
DO ,1 SUB #10 <- #24 b\/:-][
DO ,1 SUB #11 <- #16 tK<GU.+
DO ,1 SUB #12 <- #158 < bHu9D
DO ,1 SUB #13 <- #52 UWdPB2x[
PLEASE READ OUT ,1
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PLEASE GIVE UP B]PTe~n^
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Java B,sv! p+q5
public class Hello 5xZ *U
{ u$%>/cv
public static void main(String[] args) FzOr#(^
{ cD-.thHO
System.out.println("Hello, world!"); A>"v1Wk
} njk.$]M|nf
} zE{@'
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JSP Q AJX7
<% B;M{v5s~]
out.print("Hello, world!"); #4(/#K 1j
%> {~*aXu3
LEM{$Fxo&
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MIXAL c5uT'P"
TERM EQU 19 the MIX console device number {}?;|&_
ORIG 1000 start address a8T<f/qW k
START OUT MSG(TERM) output data at address MSG (fgX!G[W
HLT halt execution O_*(:Z
MSG ALF "MIXAL" )z0qKb\
ALF " HELL" Rn O%8Hk
ALF "O WOR" *_<P%J
ALF "LD " Lc>9[!+#
END START end of the program ;!<WL@C~
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<..直接输出..> 2[&3$-]
Hello, world! R5LzqT,/N:
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<..或者..> #C?T
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<. 0_HdjK
// 不带换行 2e}${NZN
? "Hello, world!" .p%p _
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// 或者 V:h-K`~/
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// 带换行 '3Ir(]Wfd
?? 'Hello, world!' &Z682b$
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