“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。 n1[c\1
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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》。 Ufr@j` *
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以下是用不同语言写成的Hello World程序的几个例子: K<JzIuf&
Ada &@=Jm
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with Ada.Text_Io; use Ada.Text_Io; %6K7uvTq
procedure Hello is AFLtgoXn:
begin 1gI7$y+?
Put_Line ("Hello, world!"); r(,U{bU<
end Hello; ep>!jMhJa
u{1R=ML
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汇编语言 o3WOp80hz
jNZ.Fb
x86 CPU,DOS,TASM Ee>VA_ss
MODEL SMALL C6+ 5G-Z
IDEAL ,p2UshOmd
STACK 100H {v={q1
"be\%W+<
DATASEG Ple.fKu
HW DB 'Hello, world!$' 5Cf!NNV
1]xk:u4LA
CODESEG B-I4(w($
MOV AX, @data mF~T?L"
MOV DS, AX r&=ulg
MOV DX, OFFSET HW <JPN<
Kv
MOV AH, 09H zLJ>)v$81
INT 21H *CN *G"
MOV AX, 4C00H =vThtl/azD
INT 21H RB>=#03
END sG g458
/<[0o]
X4 !93
x86 CPU,GNU/Linux,NASM &61U1"&$ R
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). V 6}5^W
;Enter this into "hello.asm" then type: :UwBs
;"nasm -f elf hello.asm" &1\/B
;"ld hello.o -o hello" jaS<*_~#R
;"./hello" hY}Q|-|
}G4I9Py
section .data ;data section declaration KpN]9d
msg db 'Hello World!',0AH 2H%9l@}u
len equ $-msg ;string length vNi;)"&*
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section .text ;code section declaration ,fjY|ip
global _start ;entry point (start of execution) g{&5a(W&`
_start: mov edx,len ;string length 7cc^n\c?Y
mov ecx,msg ;string start py6<QoGV
mov ebx,1 ;file handle: stdout <ZT
C^=3
mov eax,4 ;sys_write {7y;s
int 80h ;kernel system call We6eAP /Z
WZa6*pF
mov ebx,0 ;return value RO3LZBL
mov eax,1 ;sys_exit FNGa4
int 80h ;kernel system call 8W3zrnc
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D:`Q\za
x86 CPU,Windows,MASM32 {S0-y
.386 w4fKh
.model flat,stdcall tSy 9v
option casemap:none w!lk&7Q7Z
;Include 文件定义 =r]l"T
include windows.inc Na@bXcz)
include user32.inc 08\w!!a:
includelib user32.lib ss-W[|cHU
include kernel32.inc y;o - @]
includelib kernel32.lib AojL4H|
;数据段 MKbcJZe
.data ,nf}4
szCaption db 'A MessageBox!',0 cGm3LS6]*
szText db 'Hello,world!',0 -!!]1\S*Y
;代码段 _l{~O
.code RUY7Y?
start: R;HE{q[ f
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ,h=a+ja8
invoke ExitProcess,NULL AL":j6!OQ
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> vom3C9o
end start $WIE`P%
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AWK ]QlW{J
BEGIN { print "Hello, world!" } \W=3P[gb
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BASIC pPa]@ z~O
传统版BASIC(例如GWBASIC): t]I9[5Pq\
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10 PRINT "Hello, world!" <ll?rPio"
20 END Uha.8
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或在提示符输入: 4Q !A w
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?"Hello, world!":END +a39 !j
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现代版BASIC(例如Quick BASIC): Dtd~}-_Q
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Print "Hello, world!" a4UwhbH
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以下的语句在Quick BASIC中同样有效: Ck#e54gJX
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? "Hello,world!" cFc(HADM`r
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Vw H|ed$
BCPL eP"B3Jw
GET "LIBHDR" TC-Vzk G|
zg3kU65PJE
LET START () BE G@/iK/>5|`
$( -$"$r ~ad
WRITES ("Hello, world!*N") _yg;5#3
$) 0U~$u
^2}HF/
6!>p<p"Ns
Befunge /69yR
"!dlrow olleH">v cW>=/
, ]7}!3 m
^_@ 27 XM&ZrZ
{[#)Q.2
Hrpz4E%\Aw
Brainfuck CPZ,sWg5
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ke8g tbm
+++++++++++++++.>.+++.------.--------.>+.>. 7zCJ3p
)1!<<;@0
#1U>
C Ik^^8@z
#include <stdio.h> f|VCi bI
8<"g&+T
int main(void) ["f6Ern
{ Bk\Y v0
printf("Hello, world!\n"); 4ams~
return 0; we[+6Z6J
} (
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5c3-?u!
C++ <4.Exha;=
#include <iostream> .F8[;+
J@:Q(
int main() zEU[u7%
{ VA[EY`8
std::cout << "Hello, world!" << std::endl; 2|^@=.4\
return 0; \1G'{#Q
} iGSJ\
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F8Ety^9>9
C++/CLI <~5O-.G]
int main() chL1r9V)v
{ 5?;<^J
System::Console::WriteLine("Hello, world!"); `{:Nt#7
} ,i6E L
7ivo Q
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C# (C Sharp) w"?Q0bhV9y
class HelloWorldApp U\Vg &"P
{ 6=]Gom&S
public static void Main() J-tqEK*
{ ,Tr&`2w
System.Console.WriteLine("Hello, world!"); RJ@79L*#
} L0"|4=
} :ZY%-]u7
\85%d0@3
'r 7[9[
COBOL %]}JWXof
IDENTIFICATION DIVISION. 1<'z)r4
PROGRAM-ID. HELLO-WORLD. F2}Fuupb.
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ENVIRONMENT DIVISION. */h(4Hz
k)-+ZmMOh
DATA DIVISION. Gw3+TvwU+Q
V8 8u-
PROCEDURE DIVISION. tV(iC~/
DISPLAY "Hello, world!". 76rv$z{g^
STOP RUN. #aL.E(%
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8%CznAO"?W
Common Lisp MS;^:t1`
(format t "Hello world!~%") 6d]4
%Q T
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!6=s{V&r1
DOS批处理 8_!qoW@B
@echo off E7/UsUV.
echo "Hello, world!" >
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E~}H,*)
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Eiffel =hTJp/L
class HELLO_WORLD ivgX o'=
\;Q(o$5<
creation 0bh
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make [8za=B/
feature t RU/[?!
make is :epBd3f
local MXaik+2
io:BASIC_IO sZ=!*tb-
do 5/P. 4<c7
!!io (Z>?\iNJ
io.put_string("%N Hello, world!") h81giY]
end -- make %TFsk
end -- class HELLO_WORLD Fxa{
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gH(#<f@ZI
Erlang `/T.u&QF
-module(hello). QaO9-:]eN
-export([hello_world/0]). {H,O@
T^^7@\vDI
hello_world() -> io:fwrite("Hello, World!\n"). I@m(}
8g8eY pG
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Forth vh.8m$,
." Hello, world!" CR l\L71|3" g
EFDmNud`Q
Hx+r9w
Fortran olQP>sa
WRITE(*,10) [gUD +
10 FORMAT('Hello, World!') ]+,L/P
STOP \1<aBgKi
END a :*N0
tOVTHx3E]
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HTML IY.M#Q]
<HTML> +vJ}'uR3P
<HEAD> d1.@v;
<TITLE> Hello World! </TITLE> z4D)Xy"/
</HEAD> 0
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<BODY> S@pdCH, n
<p>Hello World!</p> E2}X[EoBF
</BODY> 5I[:.o0
</HTML> ?i0u)<H
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HQ9+ p5rq>&"
H ,^
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@P0rNO%y
7~"eT9WV
INTERCAL ~b*|V
PLEASE DO ,1 <- #13 I3.JAoB>!
DO ,1 SUB #1 <- #238 ])qnPoQ<n
DO ,1 SUB #2 <- #112 )/!HI0TU
DO ,1 SUB #3 <- #112 `yl|NL
DO ,1 SUB #4 <- #0 Jon3ywd1Y
DO ,1 SUB #5 <- #64 *>aVU'
DO ,1 SUB #6 <- #238 B:i$
DO ,1 SUB #7 <- #26 P;XA|`&
DO ,1 SUB #8 <- #248 )Dv;,t
DO ,1 SUB #9 <- #168 x/]G"?Uix
DO ,1 SUB #10 <- #24 f[NxqNn
DO ,1 SUB #11 <- #16 $bpu
DO ,1 SUB #12 <- #158 AWFq5YMSI
DO ,1 SUB #13 <- #52 j?tE#
PLEASE READ OUT ,1 R'F \9eyA
PLEASE GIVE UP iX2exJto
D?xR>Oo)
g|^U?|;p
Java OJydt; a
public class Hello ~|~ 2B$JeV
{ X/%!p<}:'
public static void main(String[] args) (@BB@G
{ H_8PK$c;
System.out.println("Hello, world!"); M?sTz@tqq
} { .i^&
} LCIe1P2
NU.4_cixb
=mwAbh)[7n
JSP }#Ji"e
<% IWddJb~hu
out.print("Hello, world!"); BUL<FTg
%> o<s~455m/
%dd B$(
^8ilUu
MIXAL T.{]t6t$U
TERM EQU 19 the MIX console device number Lrt~Q:z2u
ORIG 1000 start address _!Z}HCk
START OUT MSG(TERM) output data at address MSG './qBJ
HLT halt execution ?6\A$?
MSG ALF "MIXAL" l,QO+
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ALF " HELL" j=Q ?d]
ALF "O WOR" ygV-Fv>PQ
ALF "LD " `ST;";7!
END START end of the program }lx'NY~(W
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Nuva Hnvs{KC`
<..直接输出..> ?[5_/0L,=
Hello, world! )q{e L$
M}" KAa
<..或者..> d\ 7OtM
=p8iYtI
<. cn_KHz=
// 不带换行 YMwL(m1
? "Hello, world!" i~DLo3
Io7=Mc4
// 或者 |JUAR{
G>2: WQ/
// 带换行 y8di-d3_
?? 'Hello, world!' @A%\;oo
.> C !Lu`y
ARB^]
f5CnJhE|)
OCaml h4>q~&Pd
let main () = a/q8v P
print_endline "Hello world!";; 2ZMVYa2%(
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Pascal v kW2&
program Hello;
(Vy`u)gG
begin ?trqe/
writeln('Hello, world!'); Bnd Y\
end. A0uA\E4q
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8&y3oxA,
Perl 0yKPYA*j
#!/usr/local/bin/perl ")GrQv a
print "Hello, world!\n"; Z7?-c
v<S?"#
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