“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。 rgILOtk[
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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》。 +xRja(d6
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以下是用不同语言写成的Hello World程序的几个例子: xXH%7%W'f
Ada Zb-TCS+3l
with Ada.Text_Io; use Ada.Text_Io; KXcG;b[7n
procedure Hello is yXY8 oE
begin dW;{,Q
Put_Line ("Hello, world!"); -"Lia!Q]M
end Hello; *j><a
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JXBW0|8b
汇编语言 8gJ"7,}-'
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x86 CPU,DOS,TASM Lcplc"C
MODEL SMALL N<Rb<p%
IDEAL 8^p/?R^bu
STACK 100H 7u,56V?X
e{O mW
DATASEG ]jG%<j9A
HW DB 'Hello, world!$' HoymGU`w
ckP&N:tC
CODESEG wED~^[]f
MOV AX, @data /-E>5 w U
MOV DS, AX u)&6;A4
MOV DX, OFFSET HW =NAL*4c+
MOV AH, 09H P\iw[m7O
INT 21H EU ThH.
MOV AX, 4C00H Y1{6lhxgE
INT 21H h(d<':|
END >2Al+m<w
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x86 CPU,GNU/Linux,NASM #$K\:V+ 4
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). .zlUN0oe
;Enter this into "hello.asm" then type: E~2}rK+#)
;"nasm -f elf hello.asm" rv;w`f
;"ld hello.o -o hello" ub}t3#
;"./hello" [rU8%
Hh$D:ZO
section .data ;data section declaration .pu]21m=
msg db 'Hello World!',0AH fbNVmjb$)
len equ $-msg ;string length $Xk1'AzB8
2aW&d=!ZV
section .text ;code section declaration qB3
SQ:y
global _start ;entry point (start of execution) qQ/j+
_start: mov edx,len ;string length 0Vh|UJ'&7
mov ecx,msg ;string start & @^|=>L
mov ebx,1 ;file handle: stdout kxWf1hIz0
mov eax,4 ;sys_write wjoxfPnf
int 80h ;kernel system call _(<[!c!@0
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mov ebx,0 ;return value KSqWq:W+
mov eax,1 ;sys_exit oVb6,Pn
int 80h ;kernel system call /0!6;PC<
~7 C` a$
+MGEO+
x86 CPU,Windows,MASM32 0>4:(t7h\
.386 MJ8z"SKnV
.model flat,stdcall 3Q~ng2Wv%
option casemap:none ss236&
;Include 文件定义 t 4{{5U'\
include windows.inc }7X85@jC
include user32.inc d.% Vm&3
includelib user32.lib fwf]1@#
include kernel32.inc 6@ET3v
includelib kernel32.lib 'd|_ i6:y&
;数据段 bxc#bl3
.data _E:]qv
szCaption db 'A MessageBox!',0 [FAoC3 k-h
szText db 'Hello,world!',0 @;G}bYq^(I
;代码段 y_Bmd
.code "So+
start: 9H" u\t|?
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK F[l{pc "C
invoke ExitProcess,NULL S)n~^q
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Nf}G
"!
end start -wW%+wH
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@L=xY[&{
AWK = =cAL"Z
BEGIN { print "Hello, world!" } =sG C
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BASIC Ih{(d O;
传统版BASIC(例如GWBASIC): bs
kG!w
rMH\;\
I|U
10 PRINT "Hello, world!" ,~hvFTJI
20 END SYw>P1
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或在提示符输入: 8)\ ?6C
:;#^h]Q
?"Hello, world!":END GghZ".O
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现代版BASIC(例如Quick BASIC): N*f?A$u/I
^}a..@|%W
Print "Hello, world!" <KoiZ{V
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以下的语句在Quick BASIC中同样有效: quTM|>=_R
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? "Hello,world!" [GyW1-p33w
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BCPL z|Q)^
GET "LIBHDR" rFh!&_
dAh&Z:86\
LET START () BE 7.,C'^ci
$( sy.FMy+
WRITES ("Hello, world!*N") .D(H@3qA@
$) @!=q.4b
3,8<5)ds*
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Befunge )>QpR8
G-
"!dlrow olleH">v D|9xD
, _/;vsQB
^_@ _ho9}7 >
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SP?~i@H
Brainfuck z\Hg@J
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< <U%4$83$
+++++++++++++++.>.+++.------.--------.>+.>. l+HmG< P
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C 1YV ;pEw3w
#include <stdio.h> 97l<9^$
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int main(void) >o9tlO)
{ X
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printf("Hello, world!\n"); |(u6xPs;P
return 0; akATwSrU
} w%~UuJ#i
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bWWZGl9
C++ v+Mi"ZAd
#include <iostream> L|ZxB7xk
1[p6v4qO{
int main() ywQ[>itMa
{ 7IkNS
std::cout << "Hello, world!" << std::endl; 3w!8PPl
return 0; CoZOKRoaH
} o-i9 :AHs
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5
#djby}hi
C++/CLI y/i{6P2`,D
int main() >vQ8~*xd
{ H j [!F%
System::Console::WriteLine("Hello, world!"); +*uaB
} M5 \flE2
f|f)Kys%5
M`V<`
C# (C Sharp) Lmsc~~
class HelloWorldApp 9Xl[AVs:M
{ @n,V2`"
public static void Main() sU Er?TZ
{ W_.WMbT
System.Console.WriteLine("Hello, world!"); .>#X *u
} g'cLc5\
} fofYe0z
;n,xu0/
:'`y}'
COBOL 6}l[%8
IDENTIFICATION DIVISION. ^?J3nf{
PROGRAM-ID. HELLO-WORLD. QL]e<2oPJ
H^ 'As;R
ENVIRONMENT DIVISION. a\-AGG{2/X
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DATA DIVISION. ?}RPnf
>piVi[`
PROCEDURE DIVISION. w)N~u%
DISPLAY "Hello, world!". rMWJ
STOP RUN. ^'\JI
&&% oazR=
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Common Lisp |
|"W=E
(format t "Hello world!~%") -*A1[Z ?
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Upa F>,kM
DOS批处理 ee/3=/H|;
@echo off 12VIP-ABK
echo "Hello, world!" /q,vQ[R/
iD*21c<