“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。 t`AD9
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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》。 TDoYp
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以下是用不同语言写成的Hello World程序的几个例子: '.=Z2O3p
Ada g=pDC+
with Ada.Text_Io; use Ada.Text_Io; /Yh8r1^2tZ
procedure Hello is %Y@3)
begin 8^{BuUA
Put_Line ("Hello, world!"); 7v-C-u[E`
end Hello; Lg^m?~{
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汇编语言 c:0$
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i`Tne3)
x86 CPU,DOS,TASM ]HRZ9oP
MODEL SMALL /Hx\ gtV
IDEAL U2aE:$oeYi
STACK 100H BXdT;b"J(
%VMazlM15
DATASEG rdb%/@.-
HW DB 'Hello, world!$' |3i~?]
A
NB^.$39n
CODESEG J=$v+8&.
MOV AX, @data sJr$[?
MOV DS, AX C>+UZ
MOV DX, OFFSET HW iJYr?3nw;
MOV AH, 09H F JzjS;
INT 21H -l\@50,D
MOV AX, 4C00H zme:U![
INT 21H 0h7\zoZ5
END 1)r1/0
,y0kzwPR1
;#;X@BhS
x86 CPU,GNU/Linux,NASM gQ?k}D
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). +o/q@&v;Ax
;Enter this into "hello.asm" then type: $d"6y
;"nasm -f elf hello.asm" 6+It>mnR
;"ld hello.o -o hello" ~DJ/sY2/
;"./hello" ;'h7
j*6
r=9*2X#
section .data ;data section declaration )S%mKdOm
$
msg db 'Hello World!',0AH t`LH\]6@
len equ $-msg ;string length xWD wg@ P
{[$p}#7Y
section .text ;code section declaration !B\\:k]aO^
global _start ;entry point (start of execution) G67BQG\av
_start: mov edx,len ;string length iz'8P-]K>
mov ecx,msg ;string start dI>oHMC
mov ebx,1 ;file handle: stdout k@Hu0x
mov eax,4 ;sys_write &8;mcM//4
int 80h ;kernel system call ENGw <
j'7FTVmJ
mov ebx,0 ;return value 6wF?FtT
mov eax,1 ;sys_exit 8\yH7H
int 80h ;kernel system call #*9*[Xbi
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YFW+l~[#
x86 CPU,Windows,MASM32 MVdE7P
.386 7DI8r| ~
.model flat,stdcall E5o0^^
option casemap:none P`"dj@1'
;Include 文件定义 _
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include windows.inc qYpHH!!C=
include user32.inc x[vX|oE!A
includelib user32.lib mU3UQ
j
include kernel32.inc )QX9T
includelib kernel32.lib 'C[gcp
;数据段 rGN-jb)T+
.data nBNZ@nD
szCaption db 'A MessageBox!',0 BjB2YO& /
szText db 'Hello,world!',0 ;w1h)
;代码段 S4|)N,#
.code S`J_}>
start: BFMM6-Ve
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK
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invoke ExitProcess,NULL E J 9A
4B
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> %o?fE4o'
end start Oe5aNo
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im&|H-
AWK M0^r!f>O
BEGIN { print "Hello, world!" } >LW9$[H
~[[a7$_4
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BASIC `dj/Uk
传统版BASIC(例如GWBASIC): _ p?q/-[4
{}>"f]3
10 PRINT "Hello, world!" sx/g5?zh
20 END 72PDqK#
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或在提示符输入: e\P+R>i0
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?"Hello, world!":END J+9D/VT
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现代版BASIC(例如Quick BASIC): A\=:h AQ
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Print "Hello, world!" %~6+=*(\
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以下的语句在Quick BASIC中同样有效: tmm\V7sJ
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? "Hello,world!" wo?C7,-x
[rQ#skf
V,>#!zUv
BCPL (OJ}|*\ e
GET "LIBHDR" @]OI(B
{t9U]hX%A[
LET START () BE )Dv"seH.
$( 6/GhQ/T%D
WRITES ("Hello, world!*N") '2%hc\P6P
$) _/KW5
Z3S\@_/;
6z/8nf +u
Befunge (US8Sc
"!dlrow olleH">v 1Og9VG1^
, 6R?J.&|
^_@ zis-}K<
!D z:6r
;aD_^XY
Brainfuck iA%3cpIc(Z
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< -,Q<*)q{
+++++++++++++++.>.+++.------.--------.>+.>. YpuA,r;"
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Muarryh}
C $i =-A
#include <stdio.h> &jj\-;=~Ho
S;CT:kG6Y{
int main(void) ,,@_r&f:
{ +|o-lb
printf("Hello, world!\n"); ysL8w"t
return 0; hzPpw.
} hR. EZ|.
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C++ "+|>nA=7
#include <iostream> 4h(aTbHaQ
>q]r)~8F^
int main() NMOTWA}2
{ xNjA>S\]W5
std::cout << "Hello, world!" << std::endl; L*FnFRhU
return 0; k5<lkC2z
} {VI%]n{M
5Lue.U%a
8l?]UFM>C
C++/CLI b#$:XS
int main() 4$_8#wB1&
{ 0`OqD d
System::Console::WriteLine("Hello, world!"); 4}8Xoywi1
} @UvjJ
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C# (C Sharp) !WbQ`]uN/#
class HelloWorldApp Th"7p:SE?
{ r"rEVx#1=
public static void Main() ,E/vHI8
{ !CEF@J
System.Console.WriteLine("Hello, world!"); xv1$,|^ts
} $'e.bh
} QO|ODW+D
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az`5{hK
COBOL 15 SIZ:Q
IDENTIFICATION DIVISION. CIV6Qe"<
PROGRAM-ID. HELLO-WORLD. '"I"D9;9
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ENVIRONMENT DIVISION. @^`-VF
/ZD/!YD&R
DATA DIVISION. ay4|N!ExO
5nEvnnx0
PROCEDURE DIVISION. slw^BK3t
DISPLAY "Hello, world!". ~-.q<8
STOP RUN. !hJ%{.
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V1(eebi|
Common Lisp NbgP,-
(format t "Hello world!~%") i3f/{D/
6g$+ ))g
,m0=zH4+:
DOS批处理 {!x-kF_
@echo off lJq
%me;4m
echo "Hello, world!" i++ F&r[
<Qwi 0$
bv|v9_i
Eiffel D b(a;o
class HELLO_WORLD .t\Yv/|`
SU x\qz)
creation ZVda0lex&
make =L&_6