“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。 Rz <OF^Iy
GrEs1M1]*
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》。 Go\VfLL w
d{+(Lpj^
以下是用不同语言写成的Hello World程序的几个例子: vL_zvXA
Ada M.%shrJ/
with Ada.Text_Io; use Ada.Text_Io; #mc!Wt10
procedure Hello is %n$^-Vc&
begin {gF0Xm%
Put_Line ("Hello, world!"); ,krS-.
end Hello; ND]S(C"?
"Tbnxx]J
=WZ%H_oxi
汇编语言 6k0^ x Q
a_T,t'6
x86 CPU,DOS,TASM vS;'}N
MODEL SMALL VC&c)X
IDEAL B+VuUt{S
STACK 100H tiQ;#p7%
Fxd{ Zk`
DATASEG q|#MB7e/
HW DB 'Hello, world!$' mMw;0/n
eMMx8E)B
CODESEG pu;3nUH
MOV AX, @data 9Ld9N;rWm#
MOV DS, AX <bmLy_":
MOV DX, OFFSET HW h* .w"JO
MOV AH, 09H y%(X+E"n*
INT 21H O&?.&h
MOV AX, 4C00H =V $j6
INT 21H gp
END >Wi s.e%b
"e62/Ejg%
x!{
x86 CPU,GNU/Linux,NASM crmUrF#
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). hb^!LtF#Y
;Enter this into "hello.asm" then type: xxX/y2\
;"nasm -f elf hello.asm" CMVS W6
;"ld hello.o -o hello" `| 9K u
;"./hello" Ek .3
rg&+
section .data ;data section declaration Vu]h4S :
msg db 'Hello World!',0AH SE `l(-tL
len equ $-msg ;string length av' *u
Wc'Ehyi;
section .text ;code section declaration 9;f|EGwZ
global _start ;entry point (start of execution) :EHQ .^
_start: mov edx,len ;string length ZlR!s!vv
mov ecx,msg ;string start Aka^e\Y@6*
mov ebx,1 ;file handle: stdout womq^h6
mov eax,4 ;sys_write R_e)mkE
int 80h ;kernel system call M []OHw
>Q2). E
mov ebx,0 ;return value }B)jq`a?|\
mov eax,1 ;sys_exit it}-^3AM
int 80h ;kernel system call LpWI>sNv
H?:Jq\Ba0
4#rAm"H
x86 CPU,Windows,MASM32 7kz-V.
.386 960qvz!
.model flat,stdcall HHS45kg[c
option casemap:none 1r4,XSk
;Include 文件定义 981!2*
include windows.inc ~mH+DV3
include user32.inc Jp]T9W\
includelib user32.lib 1D1b"o
include kernel32.inc $L{7%]7QC
includelib kernel32.lib ^
}#f()
;数据段 :R+],m il
.data \C/z%Hf7-
szCaption db 'A MessageBox!',0 g_ M-F
szText db 'Hello,world!',0 a!t
V6H
;代码段 *T4ge|zUc
.code nFXAF!,jj
start: epVH.u%
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK YNM\pX'
invoke ExitProcess,NULL 8~5|KO >F
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> S}gD,7@
end start 3?ba
1F0Nw
OV|Z=EwJ
yX9B97XyC
AWK *Mi6
BEGIN { print "Hello, world!" } [ X|OrRA
6FjVmje
q<XcOc5
BASIC E^syrEz
传统版BASIC(例如GWBASIC): Ekf2NT
v MWC(m
10 PRINT "Hello, world!" "k>bUe|RG
20 END s^PmnFR
Y'_ D<Mp
或在提示符输入: g{a d0.y,
{Gkn_h-^
?"Hello, world!":END )6G+ tU'
|Ow$n
现代版BASIC(例如Quick BASIC): 7SHo%bA
4TJ!jDkox
Print "Hello, world!" r,nn~
,4Y sZ
以下的语句在Quick BASIC中同样有效: Qa?QbHc
vs*I7<
? "Hello,world!" \>[gl!B_Rr
M9g1d7%
$K=z
BCPL S ljZ~x,!
GET "LIBHDR" a}D&$yz2
X,53c$
LET START () BE APuu_!ez1
$( Ph\F'xROe
WRITES ("Hello, world!*N") ?M<|r11}
$) uN&M\(
=+Tsknq
)`RZkCe
Befunge fiqj;GW
"!dlrow olleH">v K!b>TICa:
, ]}_,U!`8
^_@ HjPH
L4mTs-M.
0C7" 3l
Brainfuck +}]wLM}\UF
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 8 )`5P\
+++++++++++++++.>.+++.------.--------.>+.>. #ZwY?T
x
(QhAGk&lu
V,'FlU
C %>NRna
#include <stdio.h> EM~7#Y
B2"+Hwbk
int main(void) GD/nR4$
{ iy9VruT<