“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。 0gxbo
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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》。 @|r*yi
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以下是用不同语言写成的Hello World程序的几个例子: sexnO^s
Ada /G\-v2i D
with Ada.Text_Io; use Ada.Text_Io;
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procedure Hello is pbAQf3
begin k4s >sd3 5
Put_Line ("Hello, world!"); K+PzTGWq^
end Hello; F@&q4whaVD
P|c79
=|=9\3po
汇编语言 R)ejIKtY
X,^J3Ek>O
x86 CPU,DOS,TASM .-fJ\`^mi
MODEL SMALL fq_ 6xs
IDEAL GIt;Y
STACK 100H HIeWgw^"
Lab{?!E>U
DATASEG =]&R6P>
HW DB 'Hello, world!$' MiAXbo#\
]#TL~u[
CODESEG 1u'x|Un
MOV AX, @data >\%44ba6
MOV DS, AX @4_W}1W
MOV DX, OFFSET HW hP,SvN#!2
MOV AH, 09H tk2B\}6
INT 21H zZGPA j
MOV AX, 4C00H SO3WOR`3
INT 21H M"ZP s
END K-(,,wS
pNCk~OM
FK;\Nce&
x86 CPU,GNU/Linux,NASM i8+kc_8#d
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). No!P?
;Enter this into "hello.asm" then type: Ds$FO}KD{
;"nasm -f elf hello.asm" q$0^U{j/
;"ld hello.o -o hello" p;U[cGHC
;"./hello" _|x%M}O},
hQ#'_%:
section .data ;data section declaration /<Zy-+3
msg db 'Hello World!',0AH V
:*GG+4
len equ $-msg ;string length J9mLW}I?NW
C5*j0}
section .text ;code section declaration z@{|Y;s
global _start ;entry point (start of execution) LPvyfD;Zy
_start: mov edx,len ;string length G]=U=9ZI
mov ecx,msg ;string start Lb{~a_c
mov ebx,1 ;file handle: stdout gU0}.b
mov eax,4 ;sys_write J<V}g v
int 80h ;kernel system call TJ
;4QL
3T|:1Nw
mov ebx,0 ;return value :DR
G=-M
mov eax,1 ;sys_exit 8~Rja
int 80h ;kernel system call tlA4oVII
6oL-Atf
kS8srT
/H
x86 CPU,Windows,MASM32 U"<Z^)
.386 1W"9u
.model flat,stdcall |^^;v|
option casemap:none _|g(BK2}
;Include 文件定义 v'2EYTVNJD
include windows.inc U3&*,xeU@H
include user32.inc s[SzE6eQ`l
includelib user32.lib pIqPIuy
include kernel32.inc axxdW)+K
includelib kernel32.lib 3Yp_k
;数据段 jgs kK
.data 7Q/v#_e(
szCaption db 'A MessageBox!',0 eWhv X9
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szText db 'Hello,world!',0 LyS139P$
;代码段
ACU0
.code +pnT6kU|
start: m32OE`s
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK wGBQ.Ve[
invoke ExitProcess,NULL VX[{X8PkS
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> (t&P.N/
end start P(VQ D>G
q(\$-Dk.Vv
6T;C+Y$
AWK FwBktuS
BEGIN { print "Hello, world!" } U-Fr[1I6p
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BASIC W7O%.xP
传统版BASIC(例如GWBASIC): Fu^^Jex
s<sqO,!
10 PRINT "Hello, world!" C.C\(2- Rr
20 END UY+~,a
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或在提示符输入: &+J5GHt@
Y=vA;BE]R
?"Hello, world!":END kVe^g]F
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现代版BASIC(例如Quick BASIC): b!PN6<SI
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Print "Hello, world!" D4c}z#}*0
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以下的语句在Quick BASIC中同样有效: +4GuA0N6
+S<2d.&~
? "Hello,world!" oMkB!s
deda=%w0
''?.6r
BCPL ^X)U^Qd
GET "LIBHDR" ~.VWrHC
}]=b%CPJh+
LET START () BE P`-(08t
$( !r.X. C
WRITES ("Hello, world!*N") $O%lYQY]
$) 85w
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[LjYLm%<
nUs)
Befunge 4w*F!E2H\}
"!dlrow olleH">v +ulX(u(,
, wZE[we^Q"
^_@ v$+G_ @
a_x$I?,
sN5x\9U
Brainfuck sOzjViv
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< p%xo@v(
+++++++++++++++.>.+++.------.--------.>+.>. U87VaUr
'=\]4?S
C/<fR:`c
C A;SRm<,
#include <stdio.h> e}(.u1
ENA8o}n
int main(void) ##}a0\x|
{ O JvEq@
printf("Hello, world!\n"); wW6?.}2zU
return 0; bxrByu~| 1
} 7yeZ+lD
yoGE#+|7^
riFE.;
C++ K~x G+Kh
#include <iostream> 03$Ay_2
R?Iv<(I
int main() ""d3ownKhw
{ ir \ d8.
std::cout << "Hello, world!" << std::endl;
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return 0; 0t/ S_Q
} |n01T_Z)P
V0wK.^]+}/
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C++/CLI goRoi\z $
int main() Nf<([8v;t
{ %+o]1R
System::Console::WriteLine("Hello, world!"); C
[=/40D
} C\$7C5/
IL YS:c58=
NawnC!~ $
C# (C Sharp) <0JW[m
class HelloWorldApp x*Z"~'DI
{ CDU^X$Q
public static void Main() 3zs~Y3M?i
{ B:^5W{
System.Console.WriteLine("Hello, world!"); vJl4.nk
} axXAy5
} &&_W,id`
vlEd=H,LT
u^!-Z)W
COBOL M={k4r_t
IDENTIFICATION DIVISION. 1G{$ B^
f
PROGRAM-ID. HELLO-WORLD. JfKl=vg
)JeiTh^
ENVIRONMENT DIVISION. WXO@oZ!
]#3=GFs/
DATA DIVISION. owmA]f
VNXB7#ry
PROCEDURE DIVISION. uh:
DISPLAY "Hello, world!". Nm#KHA='Z
STOP RUN. Rjm5{aa-
z~z.J]
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Common Lisp 5:^dyF&sm{
(format t "Hello world!~%") K<