“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。 46}/C5
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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》。 Eiz\Nb
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以下是用不同语言写成的Hello World程序的几个例子: j:]/AReOL
Ada yrkd#m
with Ada.Text_Io; use Ada.Text_Io; +2C:]
procedure Hello is e2/&X;2
begin Isoqs(Oi
Put_Line ("Hello, world!"); <qHwY.
end Hello; `iQyKZS/+
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汇编语言 `2S%l,>)#
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x86 CPU,DOS,TASM $K;4=zN>t:
MODEL SMALL P1z6sGG
IDEAL !|Vjv}UO
STACK 100H u%h]k ,(E
|h6)p;`gc
DATASEG qj/ 66ak
HW DB 'Hello, world!$' m,*t}j0 7
1Pn!{ bU3@
CODESEG ;~/
MOV AX, @data o+6Y/6Xp@
MOV DS, AX 1VJE+3
MOV DX, OFFSET HW ,n&Dg58K
MOV AH, 09H G7zfyw}W
INT 21H C"hc.A&4
MOV AX, 4C00H gKS^-X{x
INT 21H tTQ>pg1{qh
END PjRKYa_U
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x86 CPU,GNU/Linux,NASM l2n>Wce9
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). I>ofSaN
;Enter this into "hello.asm" then type: 8kO|t!?:U
;"nasm -f elf hello.asm" b4,yLVi<T
;"ld hello.o -o hello" tEf-BV;\y
;"./hello" 2R|2yAh
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section .data ;data section declaration R,6?1Z:J
msg db 'Hello World!',0AH EeL~`$f
len equ $-msg ;string length !~>u\h
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section .text ;code section declaration EY> %#0
global _start ;entry point (start of execution) kiqq_`66
_start: mov edx,len ;string length .F%RW8=Q
mov ecx,msg ;string start E%/E%9-7\
mov ebx,1 ;file handle: stdout U
.e Urzu
mov eax,4 ;sys_write _3kAN.g
int 80h ;kernel system call iCz,|;w%
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mov ebx,0 ;return value Lqwc:%Y:_
mov eax,1 ;sys_exit g($ y4~#
int 80h ;kernel system call N2q'$o
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x86 CPU,Windows,MASM32 X0P<ifIv
.386 C]eb=rw$
.model flat,stdcall P#76ehR]K
option casemap:none shP,-Vs#
;Include 文件定义 #gi&pR'$
include windows.inc W;Fcp
include user32.inc =]etw
includelib user32.lib J#'c+\B<2X
include kernel32.inc CUY2eQJ{U
includelib kernel32.lib %Ix^Xb0
;数据段 2/(gf[elX
.data tPFV6n
i
szCaption db 'A MessageBox!',0 L(AY)gB
szText db 'Hello,world!',0 gIRFqEz@o
;代码段 TLO-$>h
.code 8G(wYlxi
start: ;~xkT'
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK KA%tVBl
invoke ExitProcess,NULL 5b|_?Em7
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> //|9J(B]
end start >&BgF*mm
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AWK bzB9u&
BEGIN { print "Hello, world!" } @I_A(cr
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BASIC 1xcx2L+R
传统版BASIC(例如GWBASIC): c69B[Vjb
[Zgy,j\\
10 PRINT "Hello, world!" j3A+:KDn3n
20 END /I".n]
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或在提示符输入: sF(U?)48
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?"Hello, world!":END
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现代版BASIC(例如Quick BASIC): DF9Br
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Print "Hello, world!" GawLQst[+
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以下的语句在Quick BASIC中同样有效: sveFxI
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? "Hello,world!" "T#c#?
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GET "LIBHDR" ka"jv"z
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LET START () BE -+?0|>Nh
$( qH"0?<$9
WRITES ("Hello, world!*N") N!Kd VDdT|
$) 574b]
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Befunge OJ]{FI
"!dlrow olleH">v n |.- :Zy
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Brainfuck ?CM,k0
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< uK): d&]Ux
+++++++++++++++.>.+++.------.--------.>+.>. }1Wo#b+
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C vT3LhN+1
#include <stdio.h> I8`.eqV
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int main(void) ,CwhpW\Y
{ ;2%3~L8?V
printf("Hello, world!\n"); [y>Q3UqN
return 0; /rJvw
} 9.PY49|
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C++ rPr#V1}1a
#include <iostream> rA{h/T"
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int main() m0/J3
{ EYG&~a>L*
std::cout << "Hello, world!" << std::endl; y$\K@B4
return 0; 7B+?1E(
} iHQFieZ.E
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C++/CLI cF,u)+2b|6
int main() D {>,2hC
{ 0Wv9K~F
System::Console::WriteLine("Hello, world!"); Tz%l9aC
} ,3N8
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C# (C Sharp) 8> O'_6Joj
class HelloWorldApp TvM{ QGN
{ VwtGHF'
public static void Main() c.jnPVf:
{ _FAwW<S4B
System.Console.WriteLine("Hello, world!"); T /[)U
} B(b[Dbb
} FKL}6W:
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COBOL @0B<b7Jv
IDENTIFICATION DIVISION. F~RUb&*/<
PROGRAM-ID. HELLO-WORLD. 1Kwl_jf
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ENVIRONMENT DIVISION. R Af+%h*
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DATA DIVISION. V 9=y@`;
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PROCEDURE DIVISION. unjo&
DISPLAY "Hello, world!". ;x+4jpH]B
STOP RUN. x2|DI)J1'
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Common Lisp ub.pJJlC
(format t "Hello world!~%") yu}4L'e
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DOS批处理 | b@?]M
@echo off |Zkcs]8M!
echo "Hello, world!" S7N54X2JwL
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y
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Eiffel EXb{/4
class HELLO_WORLD %y8w9aGt
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creation j:{<
make & qd:o}
feature n=hz7tjaz
make is W,w g@2
local |#!25qAT
io:BASIC_IO G-,PsXSwe
do :5@7z9 >
!!io p'xj:bB
io.put_string("%N Hello, world!") VFG)|Z
end -- make |k?,4
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end -- class HELLO_WORLD [C7:Yg7
Z/Mp=273
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Erlang :Z1_;`>CT
-module(hello). QKHm OVh]
-export([hello_world/0]). rZ0@GA
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hello_world() -> io:fwrite("Hello, World!\n"). )%#hpP M^
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Forth X
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." Hello, world!" CR _$Z46wHmB
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Fortran LU;ma((yy[
WRITE(*,10) D(Xv shQ
10 FORMAT('Hello, World!') |mci-ZT
STOP 5|H?L@_9
END vz@QGgQ9~2
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HTML G. <9K9K
<HTML> C'zMOR6c
<HEAD> tx5@r;
<TITLE> Hello World! </TITLE> gs0,-)
</HEAD> :%!SzI?
<BODY> Txp~&a03
<p>Hello World!</p> _VY]
</BODY> %/S BJ
</HTML> )Dqv&^
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INTERCAL =]7 \--
PLEASE DO ,1 <- #13 nNQ\rO
DO ,1 SUB #1 <- #238 J!yc9Q
DO ,1 SUB #2 <- #112 TxxW/f9D
DO ,1 SUB #3 <- #112 Ww8C![ ,
DO ,1 SUB #4 <- #0 b<:s{f"t,
DO ,1 SUB #5 <- #64 @?e;Jp9
DO ,1 SUB #6 <- #238 lzxn} TO}
DO ,1 SUB #7 <- #26 6E_YQbdy
DO ,1 SUB #8 <- #248 iB]kn(2C
DO ,1 SUB #9 <- #168 B /Dj2
DO ,1 SUB #10 <- #24 *wh'4i}u
DO ,1 SUB #11 <- #16 8mCr6$|%
DO ,1 SUB #12 <- #158 ybYSz@7
DO ,1 SUB #13 <- #52 MTLcLmdO
PLEASE READ OUT ,1 v,>q]!
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