“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。 w0a+8gexi
{
4_I7r
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》。 ]p4`7@@)*
`^XRrVX<
以下是用不同语言写成的Hello World程序的几个例子: 2.fyP"P
L
Ada dXA{+<!!
with Ada.Text_Io; use Ada.Text_Io; 2 pM
procedure Hello is bqw/O`*wfN
begin Bo](n*i
Put_Line ("Hello, world!"); SeRK7Q&_
end Hello; Mr5('9%
E)&NP}k-P
EuKrYY] g
汇编语言 nhVK?
Ct =E;v7}
x86 CPU,DOS,TASM rQd1Ch
MODEL SMALL ({d,oU$>y
IDEAL O+(. 29
STACK 100H K^z5x#Yj
!L0E03')k
DATASEG |:7EJkKZ
HW DB 'Hello, world!$' 'mBLf&fB
k=h/i8i2z
CODESEG KRnB[$3F1
MOV AX, @data bGMeBj"R
MOV DS, AX N[+o[%A
MOV DX, OFFSET HW ~,1-$#R
MOV AH, 09H i#@ v_^ q
INT 21H )E[
Q
MOV AX, 4C00H t?%}hs\!
INT 21H )9A<fwpN
END .v
#0cQX+.
]zhq.O
>2{
|*]X\UE
x86 CPU,GNU/Linux,NASM F'?5V0\he
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). GDo)6du
;Enter this into "hello.asm" then type: ;9!yh\\
;"nasm -f elf hello.asm" T(sG.%
;"ld hello.o -o hello" Pq{YZMr
;"./hello" LhVLsa(-%
&geOFe}R
section .data ;data section declaration &|'Kut?8
msg db 'Hello World!',0AH Gpxb_}P
len equ $-msg ;string length ;4S
[ba1/
zal3j^
section .text ;code section declaration ' F 6au[
global _start ;entry point (start of execution) (<>Sz(
_start: mov edx,len ;string length bY"eC i{K
mov ecx,msg ;string start -Iruua7b
mov ebx,1 ;file handle: stdout *s<dgFA'
mov eax,4 ;sys_write {R1Cxt}
int 80h ;kernel system call Ivt)Eg
^)C$8:@
mov ebx,0 ;return value #/XK&(X
mov eax,1 ;sys_exit
4s1kZ`e
int 80h ;kernel system call =B o4yN
<Hr@~<@~
H z< M
x86 CPU,Windows,MASM32 (7Ca\H3$
.386 x
w?9W4<
.model flat,stdcall vU\w3
option casemap:none H,4,~lv|
;Include 文件定义 zhR_qW+
include windows.inc <-oRhi4
include user32.inc .U(SkZ`6
includelib user32.lib PE;0
jgsiI
include kernel32.inc @h7GTA \
includelib kernel32.lib j9L+.UVI,
;数据段 *> &N
t
.data c J"]yG)=
szCaption db 'A MessageBox!',0 t-<[._:+
szText db 'Hello,world!',0 7"CH\*%
;代码段 )H37a
.code 5f`XFe$8
start: }&C!^v
o
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK <,]CVo
invoke ExitProcess,NULL T=f;n;/>
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ae(]9 VW
end start L&gEQDPgq|
W*/s4 N
- m x3^
AWK o}^vREO
BEGIN { print "Hello, world!" } hk$nlc|$
Uf]Pd)D
##+8GLQM
BASIC j>Bk; f|
传统版BASIC(例如GWBASIC): kV(DnZ#jq
/jL{JF>I
10 PRINT "Hello, world!" XY t8vJ
20 END ;Q,).@<C
r`E1<aCr|
或在提示符输入: ]#7Y@Yo
_ L:w;Oy9T
?"Hello, world!":END w-Q 6
-
6~Oje>w;
现代版BASIC(例如Quick BASIC): fvBC9^3
fN%5D z-e
Print "Hello, world!" OFAqP1o{$
ZT-45_
以下的语句在Quick BASIC中同样有效: tIy/QN_42
N4]6LA6x6
? "Hello,world!" N, +g/o\f
%Ja{IWz9L
I;m@cSJ|j
BCPL ^l2d?v8
GET "LIBHDR" j8A R#
X1z0'gvh
LET START () BE ps;o[gB@5
$( iU+,Jeu
WRITES ("Hello, world!*N") %>:)4A
$) |/Q. "d
6o23#JgN
Ecl7=-y
Befunge Zu73x#pI
"!dlrow olleH">v !<^j!'2
, A(sx5Ynp
^_@ <^c0bY1
eS%6hUb
7XC}C+
Brainfuck .0;k|&eBD
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< jP6G.aiO
+++++++++++++++.>.+++.------.--------.>+.>. /%'7sx[p
$zA[5}{ZtQ
H9m2Whq
C Jj!tRZT
#include <stdio.h> w)SxwlW}
,r,;2,;6nd
int main(void) 7n/I'r
{ >h-6B=
printf("Hello, world!\n"); 5*'N Q010
return 0; w}<I\*\`!
}
SL5DWZ
TK?N^ly
@?AE75E{
C++ aL6 5t\2
#include <iostream> d"uM7PMs7x
I,Y^_(JW
int main() h0QQP
{ cDol
o1*
std::cout << "Hello, world!" << std::endl; j~>
#{"C
return 0; @
MoMU
} HpSfI7
j-E>*N}-_
D\~$6#B>>
C++/CLI .y/?~+N^
int main() 2;7GgO~
{ oQB1fs
System::Console::WriteLine("Hello, world!"); 8j+;Xlh
} E1[%~Cpw*
[NDYJ'VGe
NT:>.~ah@&
C# (C Sharp) \K=PIcH
class HelloWorldApp ~&|i'f[
{ <VsZ$
public static void Main() Li$k<AM
{ QNBzc {XB
System.Console.WriteLine("Hello, world!"); +& Qqu`)?F
} YH$`r6\S
} ho<#i(
N=x,96CF
CBHWMetJ*
COBOL '*.};t~;"d
IDENTIFICATION DIVISION. ~kFRy {z
PROGRAM-ID. HELLO-WORLD. ^ZBkt7
0+h?Bk
ENVIRONMENT DIVISION. Onyq'
-p~B
-,
DATA DIVISION. `buTP?]4.
}k~0R-m
PROCEDURE DIVISION. Fm{y.URo
DISPLAY "Hello, world!". 1 crjRbi
STOP RUN. 94/}@<d-=
sIM`Q%
1yf&ck1R
Common Lisp P0<uF`87
(format t "Hello world!~%") O;tn5
{)xrg sB
IRY2H#:$
DOS批处理 9bvd1bKEW
@echo off v]sGdZ(6-
echo "Hello, world!" 2|EoP-K7
N9Vcp~;
i[lH@fJm_
Eiffel BC+qeocg
class HELLO_WORLD 'ZZ/:MvQa
~a Rq\fx{
creation B dUyI_Ks:
make Po[zzj>m
feature 2Ev,dWV
make is 1owoh,V6
local }qg&2M%\
io:BASIC_IO )LUl?
do zyE yZc?
!!io ;!b(b%
io.put_string("%N Hello, world!") T9 1Iz+j
end -- make a1&^P1.
end -- class HELLO_WORLD rCYn YA
JJr<cZ4]
P7!Sc
Erlang 7dRU7p>
-module(hello). G<I5%Yo6G
-export([hello_world/0]). shRvwE[
> im4'-
hello_world() -> io:fwrite("Hello, World!\n"). ZBWe,Xvq
BN67o]*]<
|m%&Qb
Forth im`^_zebj
." Hello, world!" CR SE1 tlP
P:o<kRj1
+(
d2hSIF
Fortran ))vwofkw4
WRITE(*,10) >=(e}~5y
10 FORMAT('Hello, World!') gYZgo
STOP 9cQSS'`F
END cW2:D$Pe
U7N<!6
VI4d/2e
HTML ))Nc|`
<HTML> OkM>
<HEAD> /:DxB00
<TITLE> Hello World! </TITLE> Lv"83$^S9
</HEAD> |cacMgly
<BODY> ,DjZDw
<p>Hello World!</p> 'nul{RE*
</BODY> "v06Fj>q
</HTML> j8b:+io
h(fh |R<
t%%I.zIV7
HQ9+
>Y:ouN~<
H z"-Urd^O
9f
"*Oj
6 B
)
INTERCAL s}.nh>Q
PLEASE DO ,1 <- #13 ]loO 5
DO ,1 SUB #1 <- #238 hN.#ui5 $
DO ,1 SUB #2 <- #112 rtI4W
DO ,1 SUB #3 <- #112 B3D4fYQ
DO ,1 SUB #4 <- #0 CNwhH)*
DO ,1 SUB #5 <- #64 r&qD