“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。 G-\<5]k]
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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》。 /&D'V_Q`*
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以下是用不同语言写成的Hello World程序的几个例子: 0rk u4T
Ada R=\v3m
with Ada.Text_Io; use Ada.Text_Io; <G\
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procedure Hello is bbd0ocva
begin $zC6(C(l
Put_Line ("Hello, world!"); u lH0%`Fi
end Hello; fd?bU|I_2
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汇编语言 $42Au2Jg
MxY50^}(
x86 CPU,DOS,TASM
*-9# /Cp
MODEL SMALL *I:mw8t
IDEAL 13ipaz
STACK 100H 0SJ{@*
X$BXT
DATASEG UskZ%J
HW DB 'Hello, world!$' UG6M9
|.j^G2x
CODESEG 7 ,$ axvLw
MOV AX, @data myD{sE2A
MOV DS, AX 5\VxXiy0
MOV DX, OFFSET HW 8dc538:q}
MOV AH, 09H q^u1z|'Z
INT 21H :tKbz
nd/
MOV AX, 4C00H >RM
0=bO
INT 21H xC)7eQn/R
END +d =~LQ}*
:OHSxb>[
>/b^fAG
x86 CPU,GNU/Linux,NASM {U(Bfe^a,
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). {b(rm,%
;Enter this into "hello.asm" then type: KZECo1
;"nasm -f elf hello.asm" /a%*u6z@
;"ld hello.o -o hello" aJI>FTdK
;"./hello" 'w}p[(
bpGzTU
section .data ;data section declaration 77``8,
msg db 'Hello World!',0AH /;DjJpwf0
len equ $-msg ;string length o5>/}wIf
Pfm*<,'x"[
section .text ;code section declaration ,`<]>;s
global _start ;entry point (start of execution) )+?HI^-[S
_start: mov edx,len ;string length @Eo4U]-
mov ecx,msg ;string start 4*iHw+%mq
mov ebx,1 ;file handle: stdout j13riI3A
mov eax,4 ;sys_write &uPDZ#C-
int 80h ;kernel system call }0Y`|H\v
sqT^t!
mov ebx,0 ;return value 97!H`|u <
mov eax,1 ;sys_exit rxs8De
int 80h ;kernel system call )]wuF`
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^L ]B5,}-
x86 CPU,Windows,MASM32 gd
K*"U
.386 .W$
sxVXB
.model flat,stdcall x =h0Fq,T
option casemap:none C*a,<`
;Include 文件定义 Y5n>r@)m
include windows.inc 5.dl>,
include user32.inc E.9^&E}PG
includelib user32.lib BO"qD[S
include kernel32.inc X CzXS.
includelib kernel32.lib l/M[am
;数据段 4Ppop
.data J)#S-ZB+'k
szCaption db 'A MessageBox!',0 v[VC2D
szText db 'Hello,world!',0 3 tF:
;代码段 z#RuwB+
.code AxEc^Cof
start: "ct58Y@
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK z<i,D08|d
invoke ExitProcess,NULL FJ}gUs{m
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> lQWBCJ8y
end start @C=m?7O98
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""qh
~{$L9;x
AWK L@?e:*h
BEGIN { print "Hello, world!" }
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