“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。 n{jGOfc
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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》。 YkADk9fE
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以下是用不同语言写成的Hello World程序的几个例子: sos5Y}
Ada CGFDqCNr-
with Ada.Text_Io; use Ada.Text_Io; 6~+emlD
procedure Hello is 'fW-Y!k%
begin ^f@=:eWI
Put_Line ("Hello, world!"); ig"L\ C"T
end Hello; fsXy"#mOkD
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汇编语言 z!\*Y
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Xc.`-J~Il
x86 CPU,DOS,TASM ABkl%m6xf
MODEL SMALL sRfcF`7
IDEAL <naz+QK'
STACK 100H 8EY:tzw
M\=2uKG#
DATASEG T{'RV0%
HW DB 'Hello, world!$' ('~LMu_
2zpr~cB=
CODESEG ,,TnIouy
MOV AX, @data :KO2| v\
MOV DS, AX *ui</+
MOV DX, OFFSET HW !9x}
MOV AH, 09H ?ubro0F:
INT 21H 2SLU:=<3
MOV AX, 4C00H X?Au/
INT 21H ]^]wP]R_
END ce(#2o&`
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w
= KPT''!
x86 CPU,GNU/Linux,NASM >d6| ^h'0
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Pz^544\~ou
;Enter this into "hello.asm" then type: I:.s_8mH}
;"nasm -f elf hello.asm" \v/[6&|X0s
;"ld hello.o -o hello" g&.=2uP
;"./hello" 0IpmRH/
n`KY9[0U=
section .data ;data section declaration #;<Y[hR{P
msg db 'Hello World!',0AH OJxl<Q=z
len equ $-msg ;string length I_BJH'!t
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section .text ;code section declaration f 1d?.)
global _start ;entry point (start of execution) 'PHl$f*k
_start: mov edx,len ;string length fR|A(u#9
mov ecx,msg ;string start cZ06Kx..
mov ebx,1 ;file handle: stdout 3oqHGA:}
mov eax,4 ;sys_write M(fTKs
int 80h ;kernel system call DI%saw
y}H!c;
mov ebx,0 ;return value qWw=8Bq
mov eax,1 ;sys_exit Y$zSQ_k;U
int 80h ;kernel system call q*KAk{kR(v
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=T_g}pu
x86 CPU,Windows,MASM32 5)E @F9N
.386 4R*,VR.K
.model flat,stdcall F5Va+z,jg
option casemap:none y)pk6d
;Include 文件定义 he4(hX^
include windows.inc *8Z32c+C
include user32.inc 626r^c=
includelib user32.lib xfQ1T)F3g
include kernel32.inc ]{iQ21`a-
includelib kernel32.lib f<H2-(m
;数据段 4Up/p&1@
.data O84i;S+-p
szCaption db 'A MessageBox!',0 xA/D'
szText db 'Hello,world!',0 ]tD]Wx%
;代码段 KSvE~h[#+
.code <qSC#[xu
start: nlYNN/@"
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK "fI6Cpc
invoke ExitProcess,NULL
grYe&(`X
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> _LPHPj^Pg
end start /NlGFO*Z
! z**y}<T
xUvs:
AWK ~V-XEQA
BEGIN { print "Hello, world!" } jF>[?L
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TO_e^A#
BASIC liZxBs
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传统版BASIC(例如GWBASIC): WM{=CD
RpK@?[4s
10 PRINT "Hello, world!" Jvi#)
20 END OPi0~s
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或在提示符输入: G3 m Z($y
y*? Jui Q
?"Hello, world!":END @oNXZRg6
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现代版BASIC(例如Quick BASIC): y(&Ac[foS}
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Print "Hello, world!" VQs5"K"
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以下的语句在Quick BASIC中同样有效: :Al!1BJQ
N;d] 14|
? "Hello,world!" (mOtU8e
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: +u]S2u{
BCPL z{6Z
11|
GET "LIBHDR" omFz@
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LET START () BE pw#-_
$( ==B6qX8T
WRITES ("Hello, world!*N") GB^B r6
$) edD)TpmE,
0%B/,/PxD
jylD6IT
Befunge <$YlH@;)`a
"!dlrow olleH">v i@q&5;%%
, =*Lfl'sr_
^_@ H+#FSdy#
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r^ XVB`v
Brainfuck gr{ DWCK
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ta0|^KAA
+++++++++++++++.>.+++.------.--------.>+.>. IgzQr >
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C [;N'=]`
#include <stdio.h> 3^ClAE"8
l}h!B_P'
int main(void) zCA2X
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{ K:M8h{Ua
printf("Hello, world!\n"); K}y
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return 0; ;"I^ZFYX
} @iiT<
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W)/#0*7
C++ YUb_y^B^
#include <iostream> K"6vXv4QO
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int main() qK+5NF|
{ b>W%t
std::cout << "Hello, world!" << std::endl; km(Po}
return 0;
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} S/ *E,))m
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C++/CLI kM6
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int main() m 5.Zu.
{ b>|6t~}M
System::Console::WriteLine("Hello, world!"); Xvv6~
} F
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mw!F{pw
C# (C Sharp) R-:2HRaA
class HelloWorldApp {ax:RUQxy
{ Z;i:](
public static void Main() ^~dWU>
{ w
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System.Console.WriteLine("Hello, world!"); Q8NX)R
}
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} Y73C5.dNcE
do%&m]#;
|>Vb9:q9Po
COBOL $`c:&
IDENTIFICATION DIVISION. <} .$l
PROGRAM-ID. HELLO-WORLD. osRy e3
6<]lW
ENVIRONMENT DIVISION. :OT&
0GwR~Z}Z
DATA DIVISION. 6tZI["\
zLQx%Yg!
PROCEDURE DIVISION. _`X:jj>
DISPLAY "Hello, world!". ?ub35NLa
STOP RUN. g)-te+?6
5P bW[
PCA4k.,T
Common Lisp mFeP9MfJ
(format t "Hello world!~%") I%):1\)
'/p4O2b,
?6!LL5a.
DOS批处理 P}iE+Z3
@echo off +`4A$#$+y
echo "Hello, world!" T{"(\X$
6]N.%Y[(
kZ~~/?B
Eiffel 9r9NxKuAO
class HELLO_WORLD Z+SRXKQ
/
{%%"j
creation y =@N|f!
make ZSw.U:ep$s
feature 6)J#OKZ
make is st*gs-8jJ;
local /Oono6j
io:BASIC_IO Ri'n
do +ZYn? #IQ
!!io !D6]JPX
io.put_string("%N Hello, world!") !-bB559Nv
end -- make 2wn2.\v M
end -- class HELLO_WORLD `cO:<^%
4i bc
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Erlang 7)m9"InDI
-module(hello). 1C.VnzRnJ
-export([hello_world/0]). :UdF
}Z>)DN=+
hello_world() -> io:fwrite("Hello, World!\n"). `oJ [u:b
2%1hdA<
pAEx#ck
Forth ~[: 2I
." Hello, world!" CR *Ex|9FCt$
*j=%
#
GbyJ:
Fortran Ac6=(B
WRITE(*,10) %y@AA>x!
10 FORMAT('Hello, World!') g0H[*"hj
STOP 'qi}|I
END P>L +t`'
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RSds8\tk
HTML
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<HTML> J,G
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<HEAD> )0MB9RMk1
<TITLE> Hello World! </TITLE> \v{=gK
</HEAD> 4Hg9N}
<BODY> X]=t>
<p>Hello World!</p> ;<5q]/IHK
</BODY> R]dg_Da
</HTML> d-m7}2c
l:%GH
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neh(<>
"b[5]Y{
U
INTERCAL l,
wp4Ll
PLEASE DO ,1 <- #13 5f /`Q
DO ,1 SUB #1 <- #238 5xde;
DO ,1 SUB #2 <- #112 l0]
EX>"E
DO ,1 SUB #3 <- #112 4 :=]<sc,
DO ,1 SUB #4 <- #0 DlT{`
DO ,1 SUB #5 <- #64 2:R+tn(F
DO ,1 SUB #6 <- #238 *I'yH8Fcn
DO ,1 SUB #7 <- #26 kT?J5u_o
DO ,1 SUB #8 <- #248 v<;Md-<
DO ,1 SUB #9 <- #168 Jwp7gYZ
DO ,1 SUB #10 <- #24 'S~5"6r
DO ,1 SUB #11 <- #16 ~
1 pr~
DO ,1 SUB #12 <- #158 (t.Nk[
DO ,1 SUB #13 <- #52 x"(KBEK~
PLEASE READ OUT ,1 edV\-H5<
PLEASE GIVE UP +V+a4lU14
/=h` L,
DJir { \F
Java *A< 5*Db:F
public class Hello F?cK-.
{ }Lv;!
public static void main(String[] args) 9l,oP?
{ n(Uyz`qE
System.out.println("Hello, world!"); hcc/=_hA
} -&;TA0~;
} {!`4iiF
M;NX:mX9
6RM/GM
JSP C?Ucu]cW
<% X.V~SeS
out.print("Hello, world!"); __@BUK{ q
%> $N\Ja*g
mTh]PPo
zJXplvaL;
MIXAL z=FZiH
TERM EQU 19 the MIX console device number .-=vx r
ORIG 1000 start address uMv1O{
START OUT MSG(TERM) output data at address MSG *kVV+H<X|b
HLT halt execution b\ PgVBf9
MSG ALF "MIXAL" @KA4N`
ALF " HELL" V:27)]q
ALF "O WOR" ]~%6JJN7
ALF "LD " jtc~DL
END START end of the program K>9 ()XT)
fatf*}eln
>MK98(F
Nuva 9Ee'Cm
<..直接输出..> sr}E+qf
Hello, world! H1T.(M/"
6Iw\c
<..或者..> TKjFp%
9akH
<. |M_UQQAB|
// 不带换行 8D].MI^
? "Hello, world!" <1pEwI~
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// 或者 fQ98(+6
Th[dW<