“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。 k`8O/J
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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》。 kt2_WW[
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以下是用不同语言写成的Hello World程序的几个例子: z7bJV/f
Ada `}l%61n0
with Ada.Text_Io; use Ada.Text_Io; tr[}F7n9
procedure Hello is X$we\t
begin # dUKG8-HJ
Put_Line ("Hello, world!"); {MUiK5:
end Hello; e"%TU
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汇编语言 :^3 )[.m
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x86 CPU,DOS,TASM Y:ly x-lj
MODEL SMALL e=OHO,74z"
IDEAL Hyy b0c^=
STACK 100H QIGU i,R
eyD V911
DATASEG C6;2Dd]"N
HW DB 'Hello, world!$' [g/D<g5O
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CODESEG g2|Myz)
MOV AX, @data <J&S[`U!
MOV DS, AX ,SR7DiYg
MOV DX, OFFSET HW dgkS5Q$/
MOV AH, 09H k56Qas+3=
INT 21H n?EgC8b9
MOV AX, 4C00H KUUA>'=
INT 21H K>$f#^
END !Zj]0,^
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ls^Z"9P
x86 CPU,GNU/Linux,NASM = UH3.
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). @./h$]6
;Enter this into "hello.asm" then type: 9E2iZt]
;"nasm -f elf hello.asm" R VatGa0
;"ld hello.o -o hello" 3}fOb
;"./hello" CLrX!JV>
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section .data ;data section declaration U"k$qZ[
msg db 'Hello World!',0AH -+rzc&h
len equ $-msg ;string length W\~^*ny
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section .text ;code section declaration qgrJi +WZ
global _start ;entry point (start of execution) U|}
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_start: mov edx,len ;string length VV$t*9w
mov ecx,msg ;string start ,/{e%J
mov ebx,1 ;file handle: stdout {JgY-#R?{(
mov eax,4 ;sys_write gm-[x5O"
int 80h ;kernel system call WPL@v+
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mov ebx,0 ;return value Jp=fLo 9
mov eax,1 ;sys_exit xQu|D>kv87
int 80h ;kernel system call JI5o~;}m
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9=>fx
x86 CPU,Windows,MASM32 eO!9;dJ
.386 ,2S!$M
.model flat,stdcall ]c/E7|0Q
option casemap:none 2FIL@f|\7z
;Include 文件定义 y/Xs+ {x
include windows.inc al9wNtMT
include user32.inc Q1,sjLO-a
includelib user32.lib YExgUE|
include kernel32.inc l^lb ^"o
includelib kernel32.lib M|*YeVs9#
;数据段 XIdh9)]^}
.data 32YbBGDN!f
szCaption db 'A MessageBox!',0 [s(D==8
szText db 'Hello,world!',0 K;RH,o1
;代码段 l[/`kK
.code _ox+5?>
start: b7QE
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Za:j;u
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invoke ExitProcess,NULL gg/`{
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ?_NKyiu95
end start "h sT^sy
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AWK ` =>}*GS
BEGIN { print "Hello, world!" } M13HD/~O
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BASIC [;u#79aE
传统版BASIC(例如GWBASIC): MR#*/Iw~
za_b jE
10 PRINT "Hello, world!" ;+9OzF ;
20 END sK}AS;:
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或在提示符输入: |bY@HpMp
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?"Hello, world!":END |[*Bn3E:
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现代版BASIC(例如Quick BASIC): %2\Hj0JQQ
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Print "Hello, world!" n Nt28n@
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以下的语句在Quick BASIC中同样有效: ^D+J
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? "Hello,world!" I!sT=w8V
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aGD< #]
BCPL C96/
GET "LIBHDR" z#*.9/y\^R
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LET START () BE y\?ey'o
$( f"ezmZI
WRITES ("Hello, world!*N") n|i:4D
$) R/vHq36d
RzEzNV
b#VtPn]
Befunge 3!CUJs/W
"!dlrow olleH">v
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, GcBqe=/B!
^_@ {&51@UX
/(dP)ysc
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Brainfuck ,Bk5(e
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ]~TsmR[
+++++++++++++++.>.+++.------.--------.>+.>. XNz+a|cF
@>2pY_
+9_Y0<C
C &hOz(825r
#include <stdio.h> -%asHDQ{
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int main(void) QaWS%0go
{ 1JJsYX
printf("Hello, world!\n"); owAO&"C
return 0; }p)K6!J0
} @oXGa>Ru
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C++ iGyetFqKw
#include <iostream> jP+yN|
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int main() &2tfj(ms
{ =nEP:7~{
std::cout << "Hello, world!" << std::endl; *6Wiq5M>.
return 0; (V{/8%mWc
} 8Y($ F2
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C++/CLI (@?mm
int main() cn'>dz3v
{ |L2>|4
System::Console::WriteLine("Hello, world!"); SQodk:1)
} 384n1?
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C# (C Sharp) _#8hgwf>
class HelloWorldApp aacy5E
{ pjeNBSu6
public static void Main() sZ `Tv[
{ AxEyXT( h5
System.Console.WriteLine("Hello, world!"); &G{GLP?H
} &o:5lxR{
} #ArrQeO 5_
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COBOL ?@64gdlwq
IDENTIFICATION DIVISION. =2R4Z8G
PROGRAM-ID. HELLO-WORLD. ":]Xr!e
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ENVIRONMENT DIVISION. 8g#$Y2P
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DATA DIVISION. p Cz6[*kC
]J7qsMw
PROCEDURE DIVISION. =KE7NXu]-
DISPLAY "Hello, world!". SuE~Wb5&
STOP RUN. :qzg?\(
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&[E\2 E
Common Lisp u64#,mC[*
(format t "Hello world!~%") bC{4a_B
WtM%(8Y[]
-cgO]q+Oq
DOS批处理 ipSMmpB
@echo off +H-=`+,
echo "Hello, world!" Eb3 ZM#
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)%(ZFn}
Eiffel u6|C3,!z"
class HELLO_WORLD oF%m
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creation \/
bd
make U8_{MY-9}
feature hRkCB
make is |$Yk)z3
local sI>w#1.m/&
io:BASIC_IO 0seCQANd
do g6M>S1oOO
!!io [|nK5(e9
io.put_string("%N Hello, world!") E7uIur=g!
end -- make ]c(FgYc
end -- class HELLO_WORLD +R'8$
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Erlang w-|Rb~XT
h
-module(hello).
@|gG3
-export([hello_world/0]). UHl3/m7g
!0{SVsc)
hello_world() -> io:fwrite("Hello, World!\n"). ]kj^T?&n.
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Forth /}:{(Go
." Hello, world!" CR !(d]f0
%YG?7PBB
LjZlKB5C
Fortran {yn,u)@r9S
WRITE(*,10) , ZsZzZ#
10 FORMAT('Hello, World!') yF)o_OA[uR
STOP j\}.GM'8
END Y\
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F^dJ{<yX
HTML 2BccE
<HTML> WK%cbFq(
<HEAD> XYcZ;Z 9:
<TITLE> Hello World! </TITLE> ;dIk$_FN
</HEAD> g]~vZj
<BODY> v({O*OR
<p>Hello World!</p> @-@Coy 4Tt
</BODY> !6/UwPs
</HTML> {vu\qXmMv
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- H?c4? 5
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H 91R#/i
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Wa;N(zw0h
INTERCAL O8;/oL4 U
PLEASE DO ,1 <- #13 9o@3$
DO ,1 SUB #1 <- #238 V,r~%p
DO ,1 SUB #2 <- #112 W;u.@I&
DO ,1 SUB #3 <- #112 \Ec<ch[)c
DO ,1 SUB #4 <- #0 sI,cX#h&Y
DO ,1 SUB #5 <- #64 tU4#7b:Y
DO ,1 SUB #6 <- #238 Ez1eGPVr
DO ,1 SUB #7 <- #26 9<mMU:
DO ,1 SUB #8 <- #248 Wn<?_}sa|z
DO ,1 SUB #9 <- #168 %.bDK}
DO ,1 SUB #10 <- #24 1_Yx]%g<
DO ,1 SUB #11 <- #16 C4m+Ta%
DO ,1 SUB #12 <- #158 r8:r}Qj2w[
DO ,1 SUB #13 <- #52 P(T-2Ux6
PLEASE READ OUT ,1 Ca-"3aQkc
PLEASE GIVE UP f2gtz{r
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f_k'@e {
Java [-(^>Y
public class Hello ^G4YvS(
{ TQR5V\{&%
public static void main(String[] args) CJ<nUIy'z
{ y|LHnNQ
System.out.println("Hello, world!"); /^=1]+_!
} :Xw|v2z%3
} -2.7Z`*(
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=~:IiK/#
JSP {B+}LL!
<% Y3 $jNuV
out.print("Hello, world!"); fU6YJs.H^8
%> q9
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p?gm=b#
#A)V
MIXAL J|WE&5'
TERM EQU 19 the MIX console device number +n1!xv]
ORIG 1000 start address y
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START OUT MSG(TERM) output data at address MSG R ]Ev=V'U
HLT halt execution fe\lSGmf
MSG ALF "MIXAL" :9&