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归去来兮，田园将芜胡不归！既自以心为形役，奚惆怅而独悲。悟已往之不谏，知来者之可追。实迷途其未远，觉今是而昨非。
舟遥遥以轻飏，风飘飘而吹衣。问征夫以前路。恨晨光之熹微。乃瞻衡宇，载欣载奔。僮仆欢迎，稚子候门。三经就荒，松菊犹存。携幼入室，有酒盈樽。引壶觞以自酌，眄庭柯以怡颜。倚南窗以寄傲，审容膝之易安。园日涉以成趣，门虽庙而常关。策扶老以流憩，时矫首而遐观。云无心以出岫，鸟倦飞而知还。景翳翳以将入，抚孤松而盘桓。
归去来兮，请息交以绝游。世与我而相违，复驾言兮焉求！悦亲戚之情话，乐琴书以消忧。农人告余以春及，将有事于西畴。或命巾车，或棹孤舟。既窈窕以寻壑，亦崎岖而经丘。木欣欣以向荣，泉涓涓而始流。善万物之得时，感吾生之行休。
已矣乎，寓形宇内复几时，曷不委心任去留，胡为乎遑遑欲何之？富贵非吾愿，帝乡不可期。怀良辰以孤往，或植杖而耘籽。登东皋以舒啸，临清流而赋诗。聊乘化以归尽，乐夫天命复奚疑！
-- 陶潜
Hello, World!
From Wikipedia, the free encyclopedia.
A "hello world" program is a computer program that prints out "Hello, world!" on a display device. It is used in many introductory tutorials for teaching a programming language. Such a program is typically one of the simplest programs possible in a computer language. Some are surprisingly complex, especially in some graphical user interface (GUI) contexts, but most are very simple, especially those which rely heavily on a particular command line interpreter ("shell") to perform the actual output.
While small test programs existed since the development of programmable computers, the tradition of using the phrase "Hello world!" as a test message was influenced by an example program in the book The C Programming Language. The example program from that book prints "hello, world" (without capital letters or exclamation mark), and was inherited from a 1974 Bell Laboratories internal memorandum by Brian Kernighan, Programming in C: A Tutorial, which contains the first known version:
/* hello world in C */
main() {
printf("hello, world");
}
Hello World in C++, Python and Java
The following source code fragments are highlighted by Google Code Prettify.
The C++ version:
// hello world in C++
#include <iostream>
int main(int, char**) {
std::cout << "hello, world" << std::endl;
return 0;
}
The Python version:
#!/usr/bin/env python
# hello world in Python
def main():
print 'hello, world'
if __name__ == '__main__':
main()
The Java version:
// hello world in Java
public class HelloWorld {
public static void main(String[] args) {
System.out.println("hello, world");
}
}
Test Image
