“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。 {;{U@Z
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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》。 N`W[Q>n
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以下是用不同语言写成的Hello World程序的几个例子: mi=mwN%UB
Ada Jxvh;
with Ada.Text_Io; use Ada.Text_Io; RBQ8+^
procedure Hello is >+{WiZ`
begin Wk[a|>
Put_Line ("Hello, world!"); 70qEqNoC
end Hello; c!\Gj|
p]kEH\
sh
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汇编语言 "W(D0oy
E&8Nh J
x86 CPU,DOS,TASM nI3p`N8j*
MODEL SMALL {4S UGo>
IDEAL ,[;O'g?,g
STACK 100H %M96m
Zv@qdY<:
DATASEG "}71z
HW DB 'Hello, world!$' 9Jwd *gevV
QATRrIj{e
CODESEG {.LJ(|(Mz
MOV AX, @data 9G[
DuYJI
MOV DS, AX d`/8Q9tQ
MOV DX, OFFSET HW HR-'8?)R.A
MOV AH, 09H 5{HF'1XgZ*
INT 21H %mQ&pk
MOV AX, 4C00H nVs@DH
INT 21H AGFA;X
END <,:{Q75
<6(0ZO%,C!
s",Ea*
x86 CPU,GNU/Linux,NASM +mrLMbBiD
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ^;F/^_
;Enter this into "hello.asm" then type: ~lV#- m*
;"nasm -f elf hello.asm" ^t3>Z|DiB^
;"ld hello.o -o hello" 1i#y>fUj
;"./hello" XHA|v^
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section .data ;data section declaration TyV~2pcN
msg db 'Hello World!',0AH sV#%U%un
len equ $-msg ;string length 'ayb`
_|\X8o_
section .text ;code section declaration vN(~}gOd\
global _start ;entry point (start of execution) 8)S)!2_h
_start: mov edx,len ;string length z6w'XA1_+t
mov ecx,msg ;string start ~B[e*|d
mov ebx,1 ;file handle: stdout f:M^q ;
mov eax,4 ;sys_write 8Ay7I
int 80h ;kernel system call Pyuul4(
h2'6W)
mov ebx,0 ;return value +Kgl/Wg%
mov eax,1 ;sys_exit IN/$b^Um
int 80h ;kernel system call 3u
j|jwL
!BVCuuM>w
)bg |l?
x86 CPU,Windows,MASM32 v/
Ge+o0K
.386 <h#7;o
.model flat,stdcall <6;M\:Y*T
option casemap:none *m]Y6
;Include 文件定义 +7%?p"gEY\
include windows.inc 5
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include user32.inc Pt85q?- >
includelib user32.lib oQ,n?on
include kernel32.inc I'IFBVhaYn
includelib kernel32.lib (LsVd2AbR
;数据段 _b8KK4UR
.data #jBmWaP.
szCaption db 'A MessageBox!',0 hRXnig{;3
szText db 'Hello,world!',0 8G)~#;x1
;代码段 0m1V@3]7>
.code ,JI] Eij^
start: /
^)3V}
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK p[&Jl
invoke ExitProcess,NULL :g$"Xc8Zn
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ~hq\XQX
end start WCd:(8B
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AWK Z5'^Hj1,
BEGIN { print "Hello, world!" } &L0Ii)Ns
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