“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。 >
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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》。 ISTAJ8"
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以下是用不同语言写成的Hello World程序的几个例子: 0
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Ada !#E-p?O.
with Ada.Text_Io; use Ada.Text_Io; PTTUI
procedure Hello is j
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begin t{B6W)q
Put_Line ("Hello, world!");
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end Hello; +?5Vuc%
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汇编语言 e$mVA}>Ybp
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x86 CPU,DOS,TASM ]eTp?q%0
MODEL SMALL `];ne]xM
IDEAL #;m^DX QZn
STACK 100H #}8VUbJ
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DATASEG -vt6n1A&b
HW DB 'Hello, world!$' v~p?YYOm<
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CODESEG jASK!3pY
MOV AX, @data DvA#zX[
MOV DS, AX AAF;M}le,
MOV DX, OFFSET HW t=[/L]!
MOV AH, 09H j",*&sy
INT 21H .&K?@T4l
MOV AX, 4C00H dO-Zj#%7z8
INT 21H n9 Jev_!A
END #!rH}A>n+
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x86 CPU,GNU/Linux,NASM gUp9yV
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). A~LTi
;Enter this into "hello.asm" then type: 9YBlMf`KEf
;"nasm -f elf hello.asm" +ERuZc$3,
;"ld hello.o -o hello" O /h1ew
;"./hello" S:c
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section .data ;data section declaration gX*
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msg db 'Hello World!',0AH !Z; Nv
len equ $-msg ;string length <F|S<\Y.
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section .text ;code section declaration ZjnWbnW
global _start ;entry point (start of execution) pU u')y
_start: mov edx,len ;string length t"6u
mov ecx,msg ;string start pf3-
mov ebx,1 ;file handle: stdout gER(&L 4[
mov eax,4 ;sys_write GU xhn
int 80h ;kernel system call i2\CDYP
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mov ebx,0 ;return value .O
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mov eax,1 ;sys_exit ?Y9VviC
int 80h ;kernel system call 3LVL5y7|
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x86 CPU,Windows,MASM32 h0VeXUM;.
.386 ;ZZmX]kz,M
.model flat,stdcall ay28%[Q b4
option casemap:none -"xC\R
;Include 文件定义 jgw+c3^R_
include windows.inc az Oib=3fz
include user32.inc @t8{pb;v
includelib user32.lib "l6Ob
include kernel32.inc PS??wlp7
includelib kernel32.lib ab<7jfFIa
;数据段 NbUibxJ
.data 'W[Nr
szCaption db 'A MessageBox!',0 ]T>YYz
szText db 'Hello,world!',0 QFEc?sEe
;代码段 8p~|i97W]!
.code kgRgHkAH~
start: TI3@/SB>
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ;B"S*wYMN
invoke ExitProcess,NULL 4rNuAK`2
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> w{Y:p[}
end start 0&2&F=fOa<
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BEGIN { print "Hello, world!" } $2k9gO
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BASIC "ODs.m oq
传统版BASIC(例如GWBASIC): Eb\SK"8
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10 PRINT "Hello, world!" HQ3kxOT
20 END %>:d5"&Lbs
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或在提示符输入: |_wbxdq
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?"Hello, world!":END u-~?ylh
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现代版BASIC(例如Quick BASIC): C.{z+
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Print "Hello, world!" .cg"M0
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以下的语句在Quick BASIC中同样有效: /;rk-I
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? "Hello,world!" jX{t/8v/s4
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BCPL ]_P!+5]<
GET "LIBHDR" =Ev*Q[
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LET START () BE _#6ekl|%
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WRITES ("Hello, world!*N") 5oE!^bF?
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Befunge BF>3CW7
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Brainfuck 6tg0=_c
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< F;^GhiQVS
+++++++++++++++.>.+++.------.--------.>+.>. H{3A6fb<
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C 6?v)Hb}J%d
#include <stdio.h> <kr%ylhIu
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int main(void) I`e|[k2
{ ~&Gw[Nd1
printf("Hello, world!\n"); 5w+X
return 0; U`fxe`nVa
} 71ctjU`U2
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C++ Pe_iA_
#include <iostream> tK+K lz
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int main() ?lYi![.o
{ T6g(,xPcL
std::cout << "Hello, world!" << std::endl; )0I;+9:D=
return 0; [9E<z2H
} CYZx/r<
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C++/CLI W=$d|*$
int main() KXP^F6@l
{ wtDy-H n
System::Console::WriteLine("Hello, world!"); "=uphBZog
} $6a55~h|(
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C# (C Sharp) n3t0Qc
class HelloWorldApp >d&_e[j
{ 5X5 &(S\
public static void Main() C"I:^&sL
{ }l/!thzC
System.Console.WriteLine("Hello, world!"); `)[bu
} h9,ui^#d$
} !`yg bI.
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COBOL TM8WaH
IDENTIFICATION DIVISION.
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PROGRAM-ID. HELLO-WORLD.
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ENVIRONMENT DIVISION. YY(,H!
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DATA DIVISION. .6yC' 3~;o
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PROCEDURE DIVISION. oW*e6"<R7
DISPLAY "Hello, world!". `gIlS^Q
STOP RUN. H[ DrG6GA
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Common Lisp *%^Vq
(format t "Hello world!~%") D=U"L-rRs
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DOS批处理 A`|OPi)
@echo off 6>! ;g'k
echo "Hello, world!" ppt`5F O
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Eiffel `2S G{5o;
class HELLO_WORLD L3^WI(
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creation :zk69P3
make Suixk'-
feature \vVGfG?6
make is ENwDW#U9
local iX8&mUR
io:BASIC_IO $~xY6"_}!!
do (^-i[aJY
!!io &h.E
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io.put_string("%N Hello, world!") {umdW
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end -- make )K2,h5zU
end -- class HELLO_WORLD &CCp@" +
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Erlang _{ z.Tu
-module(hello). ` V}e$
-export([hello_world/0]). !ydJ{\;
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hello_world() -> io:fwrite("Hello, World!\n"). *Z*4L|zT
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Forth LFHV~>d
." Hello, world!" CR Zi47)8
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Fortran ~C6Qp`VF
WRITE(*,10) gz6BfHQG
10 FORMAT('Hello, World!') hC@oyC(4
STOP V3O<l}ak
END f5jxF"oGNo
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p!<Y 'G
HTML m\~{l=jIS
<HTML> :hYV\8$
<HEAD> ]YcM45xg
<TITLE> Hello World! </TITLE> B`,4M&
</HEAD> !\.%^LK1
<BODY> n!5 :I#B
<p>Hello World!</p> 5/-{.g
</BODY> $i&u\iL
</HTML> zmk# gk2H
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^ mbpt`@
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INTERCAL ;C,D1_20Z
PLEASE DO ,1 <- #13 ?k)(~Y&@p
DO ,1 SUB #1 <- #238 _JZS;8WYR
DO ,1 SUB #2 <- #112 Z)B5g>
DO ,1 SUB #3 <- #112 Qzbelt@Wx
DO ,1 SUB #4 <- #0 Jybx'vZj
DO ,1 SUB #5 <- #64 uXPvl5(Y?
DO ,1 SUB #6 <- #238 4$D:<8B
DO ,1 SUB #7 <- #26 dZ'hTzw~
DO ,1 SUB #8 <- #248 r:u,
DO ,1 SUB #9 <- #168 ,&$w*D%
DO ,1 SUB #10 <- #24 ,gHgb
DO ,1 SUB #11 <- #16 ~Y^
UP
DO ,1 SUB #12 <- #158 u`Kjs}F'
DO ,1 SUB #13 <- #52 sr(f9Vl
PLEASE READ OUT ,1 @&!HMl
PLEASE GIVE UP p:]kH
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Java ^|KX)g
public class Hello oW]~\vp^0
{ =sVB.P
public static void main(String[] args) G
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{ Z3Le?cMt^
System.out.println("Hello, world!"); mup<%@7m
} j_2-
} }Xv2I$J
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JSP e-vwve
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out.print("Hello, world!"); u*/.
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MIXAL ^F@z+q
TERM EQU 19 the MIX console device number Q)}_S@v|%
ORIG 1000 start address 3=(Gb
START OUT MSG(TERM) output data at address MSG e)I-|Q4^%
HLT halt execution D;%(Z!
MSG ALF "MIXAL" 8RS=Xemds
ALF " HELL" k.b->U
ALF "O WOR" :sD/IM",},
ALF "LD " w-9FF%@<
END START end of the program Q9v
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