“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。 :jT1=PfL
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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》。 mPi4.p)
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以下是用不同语言写成的Hello World程序的几个例子: bs
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Ada -nV]%vJ$R}
with Ada.Text_Io; use Ada.Text_Io; wZ0$ylEX
procedure Hello is #:v|/2
begin w=rh@S]
Put_Line ("Hello, world!"); {}s7q|$
end Hello; >IJH#>i
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汇编语言 ;xN4L
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x86 CPU,DOS,TASM dK#:io[Nz
MODEL SMALL lN<vu#
IDEAL xeIt7b?#
STACK 100H E"b+Q
0%<Fc9#
DATASEG ^}a..@|%W
HW DB 'Hello, world!$' jri=UGf
gH,^XZe
CODESEG Y#=0C*FS
MOV AX, @data \uc]+nV!o
MOV DS, AX 3T'9_v[Y
MOV DX, OFFSET HW JpcG5gX^B
MOV AH, 09H [W,Ej
INT 21H i
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MOV AX, 4C00H d!D#:l3;
INT 21H yS0!#AG
END X"z^4?Aj+
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x86 CPU,GNU/Linux,NASM QaH32(iH
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). rFh!&_
;Enter this into "hello.asm" then type: -v/1R1$e1
;"nasm -f elf hello.asm" Ovxs+mQ
;"ld hello.o -o hello" Nz'fM daX,
;"./hello" pi*cO
pV9$Vg?-H
section .data ;data section declaration *Ew`Fm H
msg db 'Hello World!',0AH (oBvpFP33
len equ $-msg ;string length bg'Qq|<U
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section .text ;code section declaration p`fUpARA!
global _start ;entry point (start of execution) g=0`^APql
_start: mov edx,len ;string length AU -,
mov ecx,msg ;string start A_tdtN<
mov ebx,1 ;file handle: stdout Q(
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mov eax,4 ;sys_write |C301ENZ
int 80h ;kernel system call 8d?r )/~
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mov ebx,0 ;return value 7?9QlUO
mov eax,1 ;sys_exit >gRb.-{ux
int 80h ;kernel system call zR_ "
s!:'3[7+
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x86 CPU,Windows,MASM32 ?1T)cd*
.386 (u-K^xC
.model flat,stdcall JfGU3d*c
option casemap:none J&CA#Bg:w
;Include 文件定义 pX8TzmIB0
include windows.inc Q'5]E{1<'n
include user32.inc R.@ I}>
includelib user32.lib wW
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include kernel32.inc <tXk\cOg
includelib kernel32.lib t1}R#NB
;数据段 "
R!,5HQF;
.data T1%_sq
szCaption db 'A MessageBox!',0 Y&!-VW
szText db 'Hello,world!',0 MKPxF@N(
;代码段 |L[/]@|
.code {k*rD!tT
start: ^ >JAl<k
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 8JYU1Ew
invoke ExitProcess,NULL :d}I`)&
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> v7gs
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end start o 9\J
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AWK x7J8z\b"O
BEGIN { print "Hello, world!" } ##!idcC
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BASIC /|Z_Dy
传统版BASIC(例如GWBASIC): i]x_W@h
;O8'vp
10 PRINT "Hello, world!" O/Cwm;&t
20 END |`eHUtjH
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或在提示符输入: ZZq]I
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5
?"Hello, world!":END !-rG1VI_S*
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现代版BASIC(例如Quick BASIC): e_=TkG1E6
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Print "Hello, world!" $-Iui0h
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以下的语句在Quick BASIC中同样有效: ^G(U@-0..
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? "Hello,world!" MTXh-9DA
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rf?%- X(V
BCPL T,@s.v
GET "LIBHDR" *I]/ [d
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LET START () BE g$f+X~Q
$( R*0]*\C z
WRITES ("Hello, world!*N") 7<GC{/^T
$) | KtI:n4d
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C(CwsdlP
Befunge &fofFVQnW
"!dlrow olleH">v W{Uz#o
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Brainfuck FD'yT8]"
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< cl04fqX
+++++++++++++++.>.+++.------.--------.>+.>. #ZkT![`
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C ZSWZz8
#include <stdio.h> ;gGq\c
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int main(void) wxJu=#!M
{ =E.!Ff4~(
printf("Hello, world!\n"); MB7`'W
return 0; ~Uw;6VXV1
} y>^FKN/
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C++ H2lQ(Y+H
#include <iostream> ;
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int main() {x{~%)-
{ 7F2 WmMS
std::cout << "Hello, world!" << std::endl; }ChS cY
return 0; |
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} 3iM7c.f*/
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C++/CLI ui
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int main() .8wf {y
{ ZJe^MnE (G
System::Console::WriteLine("Hello, world!"); `=V p 0tPI
} EDT9O
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C# (C Sharp) j*\oK@
class HelloWorldApp ?lE&ow
{ Nj;5iy
public static void Main() nuH=pIq6x
{ 6(=B`Z}a
System.Console.WriteLine("Hello, world!"); / 3eGt7x#
} !\VzX
} x(n|zp ("
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COBOL qv^P
IDENTIFICATION DIVISION. nW)?cQ
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PROGRAM-ID. HELLO-WORLD. 4< +f|(fIA
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ENVIRONMENT DIVISION. 8WE@ X)e
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DATA DIVISION. ,wf:Fr
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PROCEDURE DIVISION. 7Kf
DISPLAY "Hello, world!". :wq][0)
STOP RUN. oam$9 q
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Common Lisp ~&?57Sw*m
(format t "Hello world!~%") 2vTO>*t
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DOS批处理 9a[1s|>w-
@echo off 0W0GSDx
echo "Hello, world!" 3!
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egK~w8`W%
Eiffel "cyRzQ6EH
class HELLO_WORLD iX o(
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creation uwQgu!|x
make qfG:vTm
feature Nw9@E R
make is | }L=e.
local L3w.<h
io:BASIC_IO JH| D
do tnAj3wc
!!io i=L 86Ks
io.put_string("%N Hello, world!") {yv_Ni*6!
end -- make I{Ip
end -- class HELLO_WORLD :tBe/(e4#
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Erlang vh.-9eD
-module(hello). Zb=;\l*&
-export([hello_world/0]). MJh.)kd$
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hello_world() -> io:fwrite("Hello, World!\n"). cRH(@b
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z
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Forth Mq#m;v$E
." Hello, world!" CR @ R[K8
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Fortran m62Zta
WRITE(*,10) w[F})u]E
10 FORMAT('Hello, World!') v-N4&9)%9
STOP O}%ES AB
END s>:gL,%c
JNY ?]|=
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HTML GMg!2CIU
<HTML> 3$xpZm60
<HEAD> ~r?tFE*+
<TITLE> Hello World! </TITLE> KTt+}-vP^
</HEAD> !zt>& t
<BODY> `-%dHvB^R
<p>Hello World!</p> Cu5_OJ
</BODY> cpl Ny?UIC
</HTML> Ux1j +}y
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pfu"vo(t_
INTERCAL OwEV$Q
PLEASE DO ,1 <- #13 %f'=9pit
DO ,1 SUB #1 <- #238 gxmo 1
DO ,1 SUB #2 <- #112 _p0gXb1m`
DO ,1 SUB #3 <- #112 DLP@?]BBOA
DO ,1 SUB #4 <- #0 4lR+nmAZ
DO ,1 SUB #5 <- #64 x]yIe&*('
DO ,1 SUB #6 <- #238 * #E_KW1RV
DO ,1 SUB #7 <- #26 G62;p#
DO ,1 SUB #8 <- #248 V,rR*a&p
DO ,1 SUB #9 <- #168 u:']jw=f
DO ,1 SUB #10 <- #24 l?$X.CwX
DO ,1 SUB #11 <- #16 6eUGE 4NF(
DO ,1 SUB #12 <- #158 n Bd]rak'
DO ,1 SUB #13 <- #52 w>\oz
PLEASE READ OUT ,1 j94~cYV
PLEASE GIVE UP h^_^)P+;
hSxK*.W*3
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Java GApvRR+Z
public class Hello 2q]ZI
{ Zyr|J!VF
public static void main(String[] args) n-SO201[*
{ BriL^]
System.out.println("Hello, world!"); rz,,ku4qt
} 8\9W:D@"x
} ks sRwe%>;
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{ZSAPq4)L
JSP bDIhI}P
<% yUf`L=C:
out.print("Hello, world!"); b$0;fEvIJn
%> Q!3-P
/s%-c!o^
)X," NJG
MIXAL -W.-m2:1
TERM EQU 19 the MIX console device number 3 ^x&G?)
ORIG 1000 start address ern\QAhX X
START OUT MSG(TERM) output data at address MSG sVFX(yx0
HLT halt execution Xs|d#WbX
MSG ALF "MIXAL" JL!^R_b&c
ALF " HELL" ~:k
r;n2
ALF "O WOR" rXzq:
ALF "LD " [kpQ:'P3
END START end of the program $L( ,lB
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Nuva @YRy)+
<..直接输出..> 3QKBuo
Hello, world! a *
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<..或者..> -O,:~a=*_
S&-F(#CF^
<. ;7EeR M*
// 不带换行 5#x[rr{^*
? "Hello, world!" 9>0OpgvC(
nu:l;+,VY
// 或者 cUP1Uolvn
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// 带换行 Yc?S<
?? 'Hello, world!' 7p\&