“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。 /{l_tiE7
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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》。 Yp(0 XP5o
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以下是用不同语言写成的Hello World程序的几个例子: 3F"vK
Ada (_#E17U)_
with Ada.Text_Io; use Ada.Text_Io; \
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procedure Hello is 5@l5exuG*m
begin a)W|gx6Y
Put_Line ("Hello, world!"); *JImP9SE
end Hello; U;3t{~Ym
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汇编语言 )7Hx<?P
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x86 CPU,DOS,TASM E[t[R<v,P!
MODEL SMALL Ag T)J
IDEAL Wj3i*x$
STACK 100H zATOFV
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DATASEG ta.Lq8/
HW DB 'Hello, world!$' A ___|
#R
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CODESEG d. d J^M
MOV AX, @data YL`ML t4MC
MOV DS, AX Vc(kw7
MOV DX, OFFSET HW \a0{9Xx F
MOV AH, 09H :BR_%$
INT 21H gjD|f2*x
MOV AX, 4C00H 5G6 P p7[
INT 21H [ {"x{;
END <gX({FA
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x86 CPU,GNU/Linux,NASM VQf^ y q
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). z( ^?xv
;Enter this into "hello.asm" then type: M'|[:I.V
;"nasm -f elf hello.asm" UazK0{t<f
;"ld hello.o -o hello" Jo qhmn$j
;"./hello" @fA|y
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section .data ;data section declaration nQ'NS
msg db 'Hello World!',0AH V!*1F1
len equ $-msg ;string length o
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section .text ;code section declaration D:K"J><@
global _start ;entry point (start of execution) 1Q^u#m3
_start: mov edx,len ;string length A'}!'1
mov ecx,msg ;string start r25VcY
mov ebx,1 ;file handle: stdout O|Vc
mov eax,4 ;sys_write |$\1E+
int 80h ;kernel system call o=7e8l
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mov ebx,0 ;return value AD!w:jT9
mov eax,1 ;sys_exit ADxje%!1O
int 80h ;kernel system call e7n0=U0
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X ?ZLmP7|
x86 CPU,Windows,MASM32 C_;nlG6
.386 _ZJQE>]nWu
.model flat,stdcall 7r3CO<fb
option casemap:none P1L+Vnfu
;Include 文件定义 [T'[7Z
include windows.inc F&CvqPI
include user32.inc M4;M.zxJv
includelib user32.lib $AZ=;iP-
include kernel32.inc 'lEIwJV$
includelib kernel32.lib nT~XctwF
;数据段 v0!(&g3Sd
.data q$H@W.f
szCaption db 'A MessageBox!',0 vG)B}`M
szText db 'Hello,world!',0 y_Gs_xg
;代码段 4!3<[J;N;
.code )_Hv9!U]e
start: E@Ewx;P5
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK `6YN/"unfp
invoke ExitProcess,NULL <)_#6)z:
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> xU{0rM"
end start p.MLKp-'
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BEGIN { print "Hello, world!" } Jp8,s%
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BASIC qauvwAMuX
传统版BASIC(例如GWBASIC): X=Y(,ZR(&
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10 PRINT "Hello, world!" S,'ekWVD
20 END ,s}7KE
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或在提示符输入: cF iTanu
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?"Hello, world!":END
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现代版BASIC(例如Quick BASIC): PVN`k, 4
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Print "Hello, world!" ^"uD:f)
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以下的语句在Quick BASIC中同样有效: :a=]<_*x
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? "Hello,world!" !QqVJ a{j
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BCPL @P=n{-pIW
GET "LIBHDR" AGx(IK/_
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LET START () BE mEb`ET|
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WRITES ("Hello, world!*N") Jcp=<z*0
$) `"xzC $
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Befunge I'<sJs*p
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Brainfuck %7Gq#rq
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< {PL,3EBG
+++++++++++++++.>.+++.------.--------.>+.>. K$$%j "s
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#include <stdio.h> Lf Y[Z4
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int main(void) PJh97%7
{ Hxj8cXUF|
printf("Hello, world!\n"); >k2^A
return 0; w#sP5qKv8
} z2dW)_fU$
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C++ ?bG82@-
#include <iostream> Tz/[P:O3
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int main() ZZ].h2=K
{ wY7+E/
std::cout << "Hello, world!" << std::endl; DEenvS`,P
return 0; fydQaxCND
} 8WG_4e
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C++/CLI 6c[ L*1
int main() bB.Yq3KI
{ `6G:<wX
System::Console::WriteLine("Hello, world!"); h)?Km{u%
} /^[K
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C# (C Sharp) YZ5[# E@l
class HelloWorldApp 9OM&&Ue<E
{ Qlhm:[
public static void Main() 2!Pwg0%2
{ rK
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System.Console.WriteLine("Hello, world!"); /_/Z/D!
} +
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} ?*U:=|
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COBOL 4' <y
IDENTIFICATION DIVISION. N_y#Y{c{(
PROGRAM-ID. HELLO-WORLD. ~fly6j|u
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ENVIRONMENT DIVISION. !Y]%U @4}
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DATA DIVISION. ;+VHi%5Z
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PROCEDURE DIVISION. c}#(,<8X
DISPLAY "Hello, world!". T`| >oX
STOP RUN. ]"\XTL0
!o/;"'&E
^p #bxN")
Common Lisp z%WOv~8~
(format t "Hello world!~%") )mRKIM}*W
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DOS批处理 Gjf1Ba
@echo off Ya,(J0l
echo "Hello, world!" %v1*D^))
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Eiffel F5f1j]c
class HELLO_WORLD xT3l>9i
1
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creation Ix|^c268o<
make tsqWnz=)
feature 1"HSM=p
make is T1~,.(#
local N`i`[ f
io:BASIC_IO STQ~mFs"
do FuZLE%gP
!!io l j*J|%~
io.put_string("%N Hello, world!") h}(GOYS)
end -- make h2Jdcr#@FF
end -- class HELLO_WORLD Ol.
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Erlang ;X2 (G
-module(hello). AehkEN&H/t
-export([hello_world/0]). -)ag9{ *
;
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hello_world() -> io:fwrite("Hello, World!\n"). 2wG4"
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Forth A4uDuB;;ZQ
." Hello, world!" CR k@= LR
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Fortran zE NlL
WRITE(*,10) 5Pl~du
10 FORMAT('Hello, World!') 4?^t=7N
STOP B>&eciY
END \3@A C7
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HTML (^Kcyag4
<HTML> ly]n2RK
<HEAD> B:\TvWbu
<TITLE> Hello World! </TITLE> | <ZkJR3B
</HEAD> ;|LS$O1c
<BODY> O$=)
<p>Hello World!</p> Vhs:X~=qL
</BODY> k(;c<Z{?1
</HTML> zSiSZMP"
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INTERCAL O$%C(n(
PLEASE DO ,1 <- #13 TvWhy`RQ
DO ,1 SUB #1 <- #238 [lC*|4t&
DO ,1 SUB #2 <- #112 ?eb2T`\0Q
DO ,1 SUB #3 <- #112 RkJ\?
DO ,1 SUB #4 <- #0 u= K?K
DO ,1 SUB #5 <- #64 o"x&F
DO ,1 SUB #6 <- #238 w%1B_PyDg
DO ,1 SUB #7 <- #26 ]AGJPuX
DO ,1 SUB #8 <- #248 9 0[gXj
DO ,1 SUB #9 <- #168 "l&sDh%Lk<
DO ,1 SUB #10 <- #24 8<t?o'9I
DO ,1 SUB #11 <- #16 i%W,Y8\uf*
DO ,1 SUB #12 <- #158 {A(=phN
DO ,1 SUB #13 <- #52 3
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