Reading as a god

chapter 157

"Ding~ The host has studied for 1000 hours in Meson Space, accumulatively gained 0 yuan (using the Jingxiang reading card does not accumulate money), accumulatively gained 13200000 experience (including the bonus of No. Ⅱ badge)"

"The current system level is level 11, and the experience required to upgrade is 28/987"

1000 hours is quite a long time, Zhang Shan felt like a lifetime away after coming out of meson space~
It's not because of confusion, but more precisely, this state is a state of being at a loss when you draw your sword and look around~
After all, in Zhang Shan's current state, he has a thousand hours of theoretical knowledge~
Even with Mizuki's emphasis on computer courses, there are only less than 150 class hours in the course of object-oriented programming.

Although it is self-study, it is worthwhile for anyone to trigger Zhang Shan from the perspective of learning efficiency.

Even so, when he came to the real world, Zhang Shan couldn't wait to do actual C++ programming.

After all, no matter how rich the theoretical knowledge is, it is useless, the key is to practice~
Moreover, from the perspective of the classification of major disciplines, the major of computer science and technology belongs to engineering~
~~~
Luo Changhui watched as Zhang Shan sat on the bed and inexplicably pulled over a laptop.

Watching Zhang Shan knock down skillfully:
#include
using namespace std;
Luo Changhui couldn't help feeling emotional, good guy, a boss is a boss, so serious this early in the morning?
Let’s take a look at what Zhang Shan wrote next:

int main ()
{
cout << "Hello, world!" << endl;
0 return;
}
Luo Changhui:? ? ?

Isn't this the first line of code written by many people learning C++?
Good guy, thought he was a king, but turned out to be a black iron?

What the hell~
Luo Changhui tried her best not to laugh out loud.

Feeling the bursting feeling coming from somewhere~
Luo Changhui doesn't want to attract the attention of Zhang Shan, an old gentleman, to other places again~
~~
Zhang Shan has always been very involved in doing things. In fact, taking the implementation of the "hello world" program as an example, it is not necessary to use the rules of C++ to some extent, and it is also possible to directly use the rules of C language.

After all, C++ can be regarded as a superset of C to some extent. In fact, any legal C program is a legal C++ program.

But Zhang Shan still started to practice bit by bit with an extremely serious attitude.

Luo Changhui who was on the side quickly put away her contempt.

First of all, every beginner of computer program comes from the most basic line of code~
Secondly, Zhang Shan also pays too much attention to the corners~
Even trigrams like "??=" "??/" took a while.

A trigram is a sequence of three characters used to represent another character, also known as a trigram.

Three-character sequences always begin with two question marks.

Three-character sequences are less common, but the C++ standard allows certain characters to be designated as three-character sequences.In the past, this was an essential method to represent characters that were not on the keyboard.

Three-character sequences can appear anywhere, including strings, character sequences, comments, and preprocessing directives.

But Luo Changhui felt that Zhang Shan's doing so was completely unnecessary.

After all, the key to learning C++ is to understand the concepts, and not to go too deep into the technical details of the language.

But it seems that Zhang Shan also has his reasons for doing so.

After all, the purpose of ordinary people learning programming languages ​​is to become a better programmer, that is, to design and implement new systems more efficiently and maintain old systems.

Generally speaking, it is from a practical point of view~
But Zhang Shan obviously doesn’t need to be so utilitarian, if it’s really just for utilitarianism~
For Zhang Shan, it's just a matter of sending out a few recruitment notices~
To be honest, it is quite correct for Zhang Shan to choose C++ to start learning.

After all, the programming style of C++ is quite friendly, and C++ supports multiple programming styles.

Code can be written in any of the programming styles of Fortran, C, Smalltalk, etc.

Each style is effective in ensuring runtime efficiency and space efficiency.

And the application of C++ is quite extensive~
Programmers in virtually every application domain use C++.

C++ is usually used to write device drivers and other software that directly manipulates hardware that requires real-time performance.

Anyone using a Mac or a Windows PC is indirectly using C++ because the primary user interface for these systems is written in C++.

~~~
As the actual code written works more and more complex.

Zhang Shan encountered some minor situations during the operation.

About C++ operator overloading, multiple inheritance, and automatic mandatory type conversion, Zhang Shan is simply confused!
what's the matter~
And the C++ pointer is also a god pit

Similar to the C language, the use of pointers must consider memory management issues after all~
Speaking of Java, there are no such pits at all.

The syntax of the Java language is very close to that of C and C++, making it easy for most programmers to learn and use.

Java, on the other hand, discards features that are rarely used, hard to understand, and confusing in C++ (such as operator overloading, multiple inheritance, and automatic casts.)
In particular, the Java language does not use pointers, but references.And it provides automatic allocation and recovery of memory space, so that programmers do not have to worry about memory management.

Although he encountered many difficulties, Zhang Shan still wrote a lot of code during the four hours of actual trying.

Zhang Shan feels that although at his current level, he still cannot use C++ alone.

But it is not easy to deal with the object-oriented programming exam in the university!

~
The knowledge in the world is endless, although there are still some unanswered questions.

Zhang Shan made the settlement in the system in time.

"Ding~ The host studied for 4 hour in total, gained a total of 26400 yuan in money, and a total of 52800 experience points (including the bonus of the No. [-] badge)"

"The current system level is level 11, and the experience required to upgrade is 29/040"

~
Zhang Shan thought of the process of writing the code just now, no matter how you say it, it can be regarded as typing a thousand or eight hundred lines~
Zhang Shan recalled the benefit that the system had suggested before—every time the host produces a book of n million words (a book refers to a book in a narrow sense, it only refers to a paper book that has an ISBN and is officially released; and the author must only write the book by himself, You cannot rely on the power and system of others), in addition to the reading experience and money accumulated in the process of writing the book, you will get an additional currency of n million yuan corresponding to the language of the book content.

According to this logic, writing a book that is purely code-based does not waste time, and the code is basically made in the United States.

There is no doubt that everything written is American English.

Isn't it the rhythm of directly n tens of thousands of dollars to write n ten thousand codes like this?

(End of this chapter)