“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。 /J3ZL[o?Q
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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》。 Su8|R"qU
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以下是用不同语言写成的Hello World程序的几个例子: cc}Key@D
Ada 7a4o1;l
with Ada.Text_Io; use Ada.Text_Io; <IJu7t>
procedure Hello is xYfD()w<I
begin +JRF0T
Put_Line ("Hello, world!"); +k\Uf*wh
end Hello; yNg9X(U
G(iJi
q[3x2sR
汇编语言 i;z{zVR
^T5X)Nu{=C
x86 CPU,DOS,TASM h6_(?|:-(
MODEL SMALL 69m
;XdkKz
IDEAL s 5WqR8
STACK 100H JL=U,Mr6
H
3@Z.D
DATASEG lg:
HW DB 'Hello, world!$' t?c}L7ht
Rk6deI]
CODESEG \OILWQ[/
MOV AX, @data
asJ!NvVG'
MOV DS, AX '1?\/,em
MOV DX, OFFSET HW 1'.7_EQ4T
MOV AH, 09H z~*g ~RKS!
INT 21H #KxbM-1=
MOV AX, 4C00H e~l#4{w
INT 21H ;U9J++\d<A
END 5xCT~y/a
8:=n*
+Hvc_Av''
x86 CPU,GNU/Linux,NASM 7 c|bc6?
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). T9W`?A
;Enter this into "hello.asm" then type: rxnFrx
;"nasm -f elf hello.asm" p)aeH`;O
;"ld hello.o -o hello" =m89z}Ot
;"./hello" _VE^/;$"l
bmgn cwlz
section .data ;data section declaration $+JS&k/'m
msg db 'Hello World!',0AH &H}r%%|A
len equ $-msg ;string length Wj|alH9<
gr-9l0u
section .text ;code section declaration FBx_c;)9Z
global _start ;entry point (start of execution) /1N6X.Zb
_start: mov edx,len ;string length uvDzKMw~R
mov ecx,msg ;string start &QRE"_g
mov ebx,1 ;file handle: stdout Q;11N7+
mov eax,4 ;sys_write c'uhK8|
int 80h ;kernel system call Hy.AyU|L
~Q{QM: k
mov ebx,0 ;return value !oPq?lW9
mov eax,1 ;sys_exit N`iwC!
int 80h ;kernel system call PZxAH9 S?
:Z`:nq.a
-fhN"B)
x86 CPU,Windows,MASM32 L`f^y;Y.
.386 U,#yqER'r
.model flat,stdcall > fnh+M
option casemap:none *IgE)N>
;Include 文件定义 =4V&*go*\
include windows.inc P96pm6H_;
include user32.inc 5T sU Qc
includelib user32.lib J+rCxn?;g
include kernel32.inc V5+SWXZ
includelib kernel32.lib "$s~SIUB
;数据段 m/#a0~dB
.data mF` B#
szCaption db 'A MessageBox!',0 UOQEk22
szText db 'Hello,world!',0 c/c$D;T
;代码段 }Zl&]e
.code 21k5I #U
start: NM ]bgpP
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK zdXkR]
invoke ExitProcess,NULL $kR N
h6
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> OL4z%mDZi
end start %$%&m1Y
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[{&
vJAZ%aW
AWK !9 fz(9
BEGIN { print "Hello, world!" }
:W b j\
Ol4+_n8xj
2WUT/{:X
BASIC gV&z2S~"
传统版BASIC(例如GWBASIC): +`?Y?L^
J
Y*mbjyt[?X
10 PRINT "Hello, world!" pr%nbl
20 END \u6^Varw
/}-CvSR
或在提示符输入: ^vG8#A}]
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C
?"Hello, world!":END >0Q|nCx
~]ZpA-*@Ut
现代版BASIC(例如Quick BASIC): N !TW!
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Print "Hello, world!" R|i/lEq
Da"j E
以下的语句在Quick BASIC中同样有效: <n3!{w3<
C6rg<tCH
? "Hello,world!" NcY608C
B"%{i-v>**
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BCPL 6 uKTGc4
GET "LIBHDR" Jx'i2&hGN
M'_9A
LET START () BE Tw +
$( % YOndIS:
WRITES ("Hello, world!*N") T|tOTk
$) r|,i'T
GF3/ RT9
LjV]0%j?r
Befunge Web|\CH
"!dlrow olleH">v YM5fyv?
, ~c6}
^_@ Ivb4P`{
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%/l4dC
Brainfuck TX#m&vh
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< z({hiVs
+++++++++++++++.>.+++.------.--------.>+.>. _{M\Bs2<
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C ZyEHzM{$
#include <stdio.h> %vBhLaE
D %JlbH8
int main(void) ?McQr1
{ PTj&3`v
printf("Hello, world!\n"); 2)j0Ai%
return 0; 41fJ%f`
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} {[+2n]f_G
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C++ q 4V7
#include <iostream> +iI&c
s
qc-mGmom L
int main() OQ9x*TmK
{ M,ir`"s
std::cout << "Hello, world!" << std::endl; : }`-B0
return 0; -,["c9'3
} Iy }:F8F>g
2.d| G`
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C++/CLI =|=.>?t6Z0
int main() x]z2Z*
{ @BNEiOAZ#
System::Console::WriteLine("Hello, world!"); cW+t#>'r
} ,K^4fL$C;3
Oh4AsOj@
`c'W-O/
C# (C Sharp) Yq/.-4y
class HelloWorldApp YBnA+l*
{ 'g9"Qv?0{`
public static void Main() [V}S<Xp
{ ]D,MiDph
System.Console.WriteLine("Hello, world!"); 5aa<qtUjH
} j^`hzh3S
} (!:cen~|[
)Z %T27r,^
=~+DUMBT
COBOL A=kH%0s2p@
IDENTIFICATION DIVISION. ?-Vjha@BO
PROGRAM-ID. HELLO-WORLD. w4fW<ISg
+kFxi2L6
ENVIRONMENT DIVISION. ,6r{VLN
gkHNRAL
DATA DIVISION. cCR+D.F
m XXt'_"
PROCEDURE DIVISION. k#5}\w!
DISPLAY "Hello, world!". c5mZG7-
STOP RUN. U"50_O
+d|mR9^([
Iuh/I +[7
Common Lisp c*R/]Dn
(format t "Hello world!~%") ?Mee
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Reu*Pe
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DOS批处理 z.}[m,oTF
@echo off vp.ZK[/`
echo "Hello, world!" ~.!c~fke
)$,"u4
*&
m#qEv
Eiffel t3+Py7qv
class HELLO_WORLD SI8%M=P>
gsn)Wv$h
creation Jnv@.
make |c`w'W?C6
feature > ,DbNmi
make is (L`j0kPN
local WMj}kq)SY)
io:BASIC_IO CSCN['x
do n>'Kp T9|
!!io <G*nDFWf
io.put_string("%N Hello, world!") ooV*I|wcI
end -- make f#Xyoa%
end -- class HELLO_WORLD b
pv=%
m:hY`[ f6
''|#cEc)
Erlang $2%f 8&
-module(hello). KOwOIDt
-export([hello_world/0]). pn*3\
Q#EP|
hello_world() -> io:fwrite("Hello, World!\n"). Sv;_HZ
m%PC8bf`S
l|hUw
Forth |{@FMxn|q
." Hello, world!" CR B*gdgM*`
vpU#xm.K
r4,VTy2Qe
Fortran CpQN,-4
WRITE(*,10) $m CarFV-T
10 FORMAT('Hello, World!') 4BwQA#zE
STOP w eQYQrN
END %4W$Lq}
V:G>G'Eh0
P<fnLQ9
HTML Q%-di=
<HTML> R-:fd!3oQ
<HEAD> lb:/EUd5
<TITLE> Hello World! </TITLE> RNQK
</HEAD> M,5"b+mX[~
<BODY> sZLT<6_B
<p>Hello World!</p> ?,yj")+
</BODY> 8 B**8yg.
</HTML> `f'K@
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4hw@yTUo
HQ9+ !@'%G6:.
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c`fG1s
INTERCAL Nl')l"
PLEASE DO ,1 <- #13 Wpc|`e<
DO ,1 SUB #1 <- #238 ujJI
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DO ,1 SUB #2 <- #112 ]!IVz)<E&
DO ,1 SUB #3 <- #112 Pm$q]A~
DO ,1 SUB #4 <- #0 (8ht*b.5K
DO ,1 SUB #5 <- #64 9!><<7TS
DO ,1 SUB #6 <- #238 zB?
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DO ,1 SUB #7 <- #26 uf&N[M
DO ,1 SUB #8 <- #248 -WQ^gcO=7
DO ,1 SUB #9 <- #168 *|_"W+JC
DO ,1 SUB #10 <- #24 IuZ) [*W
DO ,1 SUB #11 <- #16 M3~K,$@
DO ,1 SUB #12 <- #158 X";@T.ZGut
DO ,1 SUB #13 <- #52 )z8!f}:De=
PLEASE READ OUT ,1 oBUxKisW
PLEASE GIVE UP "6a8s;
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