“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。 Bfbl#ZkyL
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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》。 +nU' ,E
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以下是用不同语言写成的Hello World程序的几个例子: CKJAZ 2
Ada 4#TnXxL
with Ada.Text_Io; use Ada.Text_Io; #o"tMh!f
procedure Hello is J09*v)L
begin .=?Sz*3
Put_Line ("Hello, world!"); @8|~+y8,
end Hello; 6!*K/2:O
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汇编语言 |d5ggf.w
Q%rVo4M#2
x86 CPU,DOS,TASM k"t>He
MODEL SMALL C,[L/!
IDEAL @=CLeQG`
STACK 100H Gj6<s./
Lt>?y&CcQ
DATASEG mG
X\wta
HW DB 'Hello, world!$' P<8LAc$T
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CODESEG HS7R lU^
MOV AX, @data MY&<)|v\
MOV DS, AX TV<Aj"xw
MOV DX, OFFSET HW bC6X?m=
MOV AH, 09H c qv.dC
INT 21H OE6#YT
MOV AX, 4C00H P;jlHZ 9?O
INT 21H y*_K=}pk
END %?@x]B9Y8E
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x86 CPU,GNU/Linux,NASM 4>l0V<
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). &/HoSj>HS
;Enter this into "hello.asm" then type: ;D:=XA%
;"nasm -f elf hello.asm" KvGbDG
;"ld hello.o -o hello" |n)<4%i8J
;"./hello" <Uf|PFVj$
q5!0\o:
section .data ;data section declaration /\~l1.6`
msg db 'Hello World!',0AH R;%^j=Q
len equ $-msg ;string length NOV.Bs{
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EVWA\RO'\
section .text ;code section declaration fTTm$,f5N
global _start ;entry point (start of execution) Q<dba12
_start: mov edx,len ;string length "X`Qe!zk4
mov ecx,msg ;string start vnDmFqelz
mov ebx,1 ;file handle: stdout 4yhcK&
mov eax,4 ;sys_write qZ#!CPHS
int 80h ;kernel system call : sFo
&ryiG
mov ebx,0 ;return value +9TV:T
mov eax,1 ;sys_exit CDJ$hu
int 80h ;kernel system call $kv@tzO
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(Bsw/wv
x86 CPU,Windows,MASM32 "8FSA`>=
.386 y`({ .L
.model flat,stdcall h5j<u
option casemap:none TWtC-wI;
;Include 文件定义 3=IG#6)~C
include windows.inc @$Yb#$/
include user32.inc \`
&ej{
includelib user32.lib a`s/ qi
include kernel32.inc Jlz9E|*qV
includelib kernel32.lib <W?WUF
;数据段 7O"hiDQ
.data ("b*? : B
szCaption db 'A MessageBox!',0 _OLI%o
szText db 'Hello,world!',0 yk`)Cq%=;
;代码段 3\]~!;dI
.code XYMxG:
start: FQ1arUOFW,
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ghX:"vV{n
invoke ExitProcess,NULL &"xQ~05
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >C:If0S4X
end start EPv%LX_j
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AWK =88t*dH(,"
BEGIN { print "Hello, world!" } 3Mur*tj#
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h>| g2h
BASIC N70zjy4?fL
传统版BASIC(例如GWBASIC): n? }5!
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10 PRINT "Hello, world!" ?/)lnj)e{
20 END u|T%Xy=LU
~+=E"9Oo
或在提示符输入: UUGe"]V^g:
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?"Hello, world!":END qZ&