“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。 54s+4R FL
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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》。 "P`V|g
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以下是用不同语言写成的Hello World程序的几个例子: :Lqz`
Ada `|e?91@vEa
with Ada.Text_Io; use Ada.Text_Io; Bh?K_{e
procedure Hello is i6M_Gk}
begin Au,xIe!t
Put_Line ("Hello, world!"); msOk~ZPE6\
end Hello; cx M=#Go
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汇编语言 |k3ZdM
;=>4
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x86 CPU,DOS,TASM 8nw_Jatk1
MODEL SMALL .t|vwx
IDEAL !Vl>?U?AN
STACK 100H VU`aH9g3(
ykc$B5*
DATASEG yg\bCvL&
HW DB 'Hello, world!$' =7pLU+ u
FI{9k(
CODESEG xTNWT_d
MOV AX, @data #n5q$
MOV DS, AX n Bv|5$w:
MOV DX, OFFSET HW F-g(Hk|v
MOV AH, 09H =qiX0JT
INT 21H l/0TNOA
MOV AX, 4C00H 9{_D"h}}
INT 21H !fUrDOM0E
END ~.7r
Y}%=:Yt
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x86 CPU,GNU/Linux,NASM YqwDvJWX
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). gE'b.04Y9i
;Enter this into "hello.asm" then type: 91|=D
\8aE
;"nasm -f elf hello.asm" is?H1V~8`$
;"ld hello.o -o hello" k ]C+/
;"./hello" :J` *@cDn
|uVhfD=NG
section .data ;data section declaration ! 4 `any
msg db 'Hello World!',0AH WL(u'%5
len equ $-msg ;string length j*aN_UTr3
[4B.;MS(
section .text ;code section declaration T )
T0.c
global _start ;entry point (start of execution) ?-[.H^]s~
_start: mov edx,len ;string length 'eg?W_zu
mov ecx,msg ;string start &g;4;)p*8
mov ebx,1 ;file handle: stdout 7bOL ,S
mov eax,4 ;sys_write 8&: *<
int 80h ;kernel system call bv,_7UOG
&o*/6X
mov ebx,0 ;return value Vvu+gP'z.
mov eax,1 ;sys_exit A7SBm`XJ)p
int 80h ;kernel system call "mr;|$Y
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x86 CPU,Windows,MASM32 M6U/.
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.386 os*QWSs
.model flat,stdcall }XVz?6
option casemap:none "J^M@k\!
;Include 文件定义 3Qmok@4e)
include windows.inc r!+-"hS!
include user32.inc `r;e\Cp
includelib user32.lib U WYLT-^x
include kernel32.inc u|h>z|4lJj
includelib kernel32.lib Q| >
\{M
;数据段 Wo=Q7~
.data TMZg GUn
szCaption db 'A MessageBox!',0 TZL)jfhj
szText db 'Hello,world!',0 ~_=ohb{
;代码段 NMb`d0;(
.code A;Rr#q<
start: oW3{&vfz
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 9NvV{WI-1
invoke ExitProcess,NULL ^50#R<Ny
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> XmN3[j
end start J/Ki]T9
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AWK 0kP,Zj<
BEGIN { print "Hello, world!" } &qqS'G*
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BASIC fwB+f`w`
传统版BASIC(例如GWBASIC): 13(JW
>i=^Mh-bm
10 PRINT "Hello, world!" RbUBKMZU
20 END +`g&J
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或在提示符输入: }.w@.
S"
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?"Hello, world!":END ukBj@.~
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现代版BASIC(例如Quick BASIC): 3Tv;<hF
>!:uVS
Print "Hello, world!" ilL] pU-
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以下的语句在Quick BASIC中同样有效: X&EcQ
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? "Hello,world!" PK^{WF}L;
^Z]1Z
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BCPL N9IBw',
GET "LIBHDR" WF#eqU*&
F aO=<jYi
LET START () BE HVG9 C$
$( 2@WF]*Z
WRITES ("Hello, world!*N") FaO1?.
$) f6n'g:&.W
to@ O
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Befunge -Gjz;/s%XH
"!dlrow olleH">v pcIJija:
, v~i/e+.h>y
^_@ hQ`g
B.DR
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Brainfuck qv|geBW
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 7N0V`&}T
+++++++++++++++.>.+++.------.--------.>+.>. .} <$2.
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C NFpR jC?
#include <stdio.h> ~*R"WiDtI
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