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Hello, world!

These short 4 Chinese characters seem ordinary, but the moment they successfully appeared, Shu Lao and Cheng Li jumped up excitedly.

No one knows better than them the epoch-making meaning behind these four Chinese characters!

This means that the first spell in the history of Cheng Li's self-compilation has succeeded.

It is clear that in the past tens of thousands of years, or even tens of millions of years, there has never been such a spell that simply outputs 4 specified Chinese characters.

This is the first spell in the cultivation realm that has not been obtained through perception in tens of millions of years.

If the many spells in the cultivation realm that were as many as stars in the past were all godsends, then the spell that Cheng Li wrote according to his own ideas now is really the first spell written by a human being himself.

"Oh my God! It's really successful! We cultivators can really write the spells we want according to our own ideas! Spells are the sacred status destined by the heavens, and it seems that they are about to be shaken!"

Even the old man was so excited that he was a little incoherent.

Because he knew very well that these simple four words definitely had the power to shake the entire cultivation realm!

At this moment, even if I really admired Cheng Li from the bottom of my heart, I no longer had any idea of treating Cheng Li as a junior. Cultivators have always admired attainment first, and Cheng Li has proven countless times that he has knowledge far beyond that of cultivators, and he has the ability to transform this knowledge into power!

"But, Master Cheng, then, why do you use the words 'hello world', and do you have any profound meaning?"

Cheng Li noticed that Lao Dui's own title had become Master Cheng, and Cheng Li didn't pretentiously correct anything, and now he also needs this authority, so he acquiesced to it.

As for the question of being old, Cheng Li said with a smile.

"Nothing, above our nine days, 'Hello, World!' was the first program written when learning to code as a programmer.

"Because the first person who created the high-level language yin-yang arithmetic, the first demo program he wrote was 'Hello, world!', so it became a tradition that was handed down so that people who later learned programming would write this program first. ”

On Earth, "The C Programme Language" has become very famous because it uses "hello, orld" as the first demonstration of program writing, basically every programmer writes the first program when learning to program is "hello, orld", and many programmers will also use it to determine whether the compiler, program development environment, and runtime environment of the language have been installed properly when debugging equipment.

As a person whose knowledge is all passed on to the earth, Cheng Li naturally used the Chinese expression of "hello, orld" to express the first spell program he wrote, so there was "Hello, world!"

This is also a sentence that Cheng Li really said to the world in his heart, hello, the world, I am here, representing a new knowledge system has come to this world!

Hearing Cheng Li's answer, the old man nodded and said, "I see, but what does this high-level language yin-yang arithmetic mean?"

"Let's put it this way, the yin-yang arithmetic on Qingling Island, we are defining it as the classical yin-yang arithmetic, and everything in it is based on yin and yang, which are the only two signs.

"Although classical yin-yang arithmetic is directed to the essence, it has an essential conflict with human thinking, so this makes the programming efficiency extremely low when humans directly use classical yin-yang arithmetic to write programs.

"On this basis, we have developed a programming method that is more suitable for human thinking, which is the high-level language yin-yang arithmetic. ”

For Cheng Li's statement, the old man is still a little resistant to the truth, because the people of Qingling Island, or the cultivators, think that the avenue is simpler in their bones, and they prefer things that are concise to the essence, so the status of the binary classic yin-yang arithmetic in their minds is sacred. And another, more complex product derived from classical yin-yang arithmetic, how can it be called advanced?

Cheng Li seemed to see what the old man was thinking, and he seemed to know that if he used high-level language to speak, it would be difficult for the people of Qingling Island to accept, so he changed his words.

The high-level language here does not mean something more advanced than classical yin-yang arithmetic. Rather, it refers to a highly generalized and highly encapsulated programming language......

"Perhaps, it's a bit of a misappropriation to speak of high-level language, and I prefer to call it 'linguistic yin-yang arithmetic'. ”

For Cheng Li's explanation, it was much easier to accept it in his heart, and he nodded and said: "Well, so I can understand, in fact, it is to linguize yin-yang arithmetic, and use the linguistic logic method that human beings are more accustomed to writing linguistic yin-yang arithmetic."

"But because it is in the logical way of human language, in the end, you still have to use the 'compiler' you said to translate the written linguistic yin-yang arithmetic into the yin-yang arrangement of classical yin-yang arithmetic. ”

Seeing that the arithmetic old man could accept his statement, Cheng Li was also a little relieved, and said with a smile: "That's right, in addition, the linguistic yin-yang arithmetic is also a bit tongue-twisting, in the future, we can call the linguistic yin-yang arithmetic a program!"

"Program?"

"That's right, Cheng means rule, and order means order. ”

Therefore, the meaning of a program is a language with structural characteristics that is organized in a certain order under certain rules.

"We can simply understand that the language that can be compiled into yin-yang arithmetic, that is, the program. ”

"Writing a program is called programming. ”

"People who specialize in writing programs are programmers. ”

For Cheng Li's statement, he seems to agree with it: "That's right, the word program is very concise and concise to point out the two most important cores of this language." I look at your programming situation in the past few days to understand and analyze, the two cores of the program are "rules" and "order". There are rules, so you can compile according to the rules. There is an order, so that the structure can be formed, wonderful!"

Regarding the understanding of the old man, Cheng Li couldn't help but glance at the old man, and couldn't help but praise in his heart: "It is worthy of being the person with the deepest attainments in yin and yang arithmetic on Qingling Island, and he understands the core essence of the program so quickly." ”

Then he continued to say to the old man.

"Then the next step is the classification of programs. ”

"Above our nine heavens, programs are programs that are mostly used as calculators themselves, which we call calculator programs. ”

"But before I came down, we were already working on the matter of programming formulas in a programmatic way for nine days. But because I had an accident before I could make progress, I came here. Now we're left to figure out how to write procedurally. ”

So, in order to make it easier to distinguish in the future, here I will divide the programs into two categories. ”

Cheng Li solemnly said to the arithmetic: "One is the program that is used on the calculator and written on the calculator, which is called the calculator program. ”

"The other type is the program that acts on the cultivator himself and is written with mana in the dantian, I plan to call it a mana program!"