Today is the 11th day of the first lunar month, and there is still about a week before the official start of school. Pen & Fun & Pavilion www.biquge.info Therefore, this so-called "make-up examination" has naturally become a literal make-up examination. In other words, whether it is the question or the invigilation, there is no emotion left - but, Niu Niu, that guy, he didn't read or review at all during the entire winter vacation. This means that if he just goes to the exam room without any backup, then he will only become cannon fodder under the butcher's knife and honestly take the retake exam in the coming year...

Even a guy like Niu Niu who has no intention of professional development doesn't want to step on the deadly landmine of "hanging the course". So, he came to ask Jiang Yucheng to help him with such a dilemma - although he is not a school bully, but as the only person in the dormitory who took this course and scored a perfect score of 4.0, Jiang Yucheng is obviously a very reliable person to ask for. Although Jiang Yucheng was not confident in his level after a vacation, he decided to roll up his sleeves when he thought that the other frustrations would not be much better.

After Jiang Yucheng discussed with Niu Niu, he decided to use mobile phone communication to help him get through this difficult time - although in terms of the requirements of invigilation, this literal make-up exam will not be particularly relaxed, but on the other hand, because after all, this is a make-up exam and not a real exam week, so in terms of anti-cheating hardware facilities, it still can't be compared with the real final exam - it can't be compared with the national exams such as the college entrance examination, the fourth or sixth grade, or the postgraduate entrance examination.

In general, in order to prevent candidates from using mobile phones and other radio equipment to cheat, the examiner will often deploy equipment such as "full-band blocking interference" - in the case of national-level exams, the police, or even the military's electronic countermeasures department, will assist the education authorities in conducting electronic reconnaissance and SEAD around the examination room (Note 1), and arrest criminal suspects who organize the use of radio means to cheat outside the examination room. And during exam week, although the level of confrontation and technical means are not so advanced, "full-band blocking jamming" will still be used - so cheating through mobile phones is simply impossible.

However, the current re-examination is taking place, and it is not within the actual exam week - for the school-organized examination, if you want to set up a mobile phone signal jamming device, you must obtain permission from the city's Radio Regulatory Commission, otherwise it is a complete violation. Therefore, "full-band blocking interference" can only be enabled during the exam week, and cannot be used during the usual exam - this also gives Niu Niu and Jiang Yucheng a chance.

All teaching buildings of Northeast Renmin University are covered with wireless networks throughout the university, and Niu Niu only needs to use his mobile phone to connect to the Internet, and then he can take pictures of the test papers and send them to Jiang Yucheng with communication software. After Jiang Yucheng received the test questions, he directly gave the answers and sent them to him in the form of words or pictures. At the same time, in order to ensure his own safety, Jiang Yucheng registered a new account that he had never used before, and used a VPN to change his IP to a foreign one - if it was really the network supervision department to check the water meter, this little trick would definitely be useless, but this is just an exam organized by the school itself, even if Niu Niu was caught by the school and really bit himself, Jiang Yucheng just didn't admit it. There are no criminal offenses involved, and the school obviously doesn't have as much energy as the internet surveillance department to find out who is behind the VPN...

However, unfortunately, two days later, Jiang Yucheng's wireless router at home had a fault. The wired part is still working normally, but something seems to be wrong with the WiFi antenna's ability to transmit signals. To put it simply, Jiang Yucheng must now connect a separate network cable, otherwise he will not be able to access the Internet. But now, Jiang Yucheng can't find a long enough network cable for the time being, and the new router he bought in a certain east will not be delivered until two days later - so Jiang Yucheng has to borrow Xiaoqi's wireless network to use it first.

After Xiaoqi came back from his grandparents, Jiang Yucheng suddenly felt as if his empty heart had been partially filled by something. Although it can't be filled yet, Jiang Yucheng doesn't want to ask for more for the time being - according to Jiang Yucheng's observations, Xiaoqi, who lives in seclusion, seems to be "safe" for the time being: the real boyfriend doesn't matter for the time being, even if the scope is expanded to "classmates and friends with good relationships", it can't tolerate other boys except Jiang Yucheng. In other words, at least in the short term, Xiaoqi is still "safe" - Jiang Yucheng does not have to go to great lengths to "defend" Xiaoqi as he did to "defend" Shanshan.

In this way, under Niu Niu's nervous eyes, Jiang Yucheng's eager gaze and Xiao Qi's curious gaze, the exam began.

Under normal circumstances, the test of domestic university programming courses should consist of four types of questions: the first to see is definitely the most common multiple-choice question, which examines a part of the overall knowledge points - however, the fill-in-the-blank questions, short-answer questions and calculation questions that also accompany everyone through the compulsory education stage are not found in the organic test paper. The main part of the organic test paper is the so-called "reaction question", that is, a reactant is given, and then various conditions are given, so that the candidate can judge what kind of reaction will occur, and write the product.

In addition, the remaining three types of questions are conceptual fill-in-the-blanks, code fill-in-the-blanks, and programming questions – "conceptual fill-in-the-blanks" usually ask questions about the analysis of a certain concept, or ask for the calculation of a given value

"Code fill-in-the-blank questions" are given a part of the code and ask you to fill in the blanks to fill in the missing parts; "programming questions" are naturally programmed according to the requirements on paper - of course, this type of question is not available yet, because the public elective courses of the whole school do not have such high requirements, and the professional courses of the CS department generally directly use the OJ platform to conduct computer-based tests. In other words, there are only three types of questions that will be encountered below: multiple-choice questions, conceptual fill-in-the-blank questions, and code fill-in-the-blank questions.

"Can you receive it?" After connecting to the Internet, Jiang Yucheng's fingers quickly tapped on the keyboard and typed such a line on the screen.

"Received-" Niu Niu quickly sent a reply, "I'm all pointing at you today..."

"Is that your husband over there?" Jiang Yucheng asked—although he had done his best to do this, he was a brother in his dormitory after all, and it was impossible not to care about it at all, "It is said that this year's invigilation of the School of Science is what the four famous catchers..."

"Well, it's okay..." Niu Niu didn't seem to care much about these things, "Things are still going well on my side - I came two hours early to occupy a seat, and the location is very good..."

Hawkers, since he said it's okay, then it's okay - dead friends don't die poor, even if Niu Niu is really caught, it doesn't matter to Jiang Yucheng. Anyway, he asked Jiang Yucheng for help, and Jiang Yucheng just needed to help pass on the answer.

If you want to talk about this "four famous catches", in Northeast Renmin University, it is also a campus legend as famous as "Baoyan Road" -- the content of this legend probably means that there are four particularly terrible invigilators in this school, called "four famous catches" Yunyun.

However, since it is a campus legend, it is inevitable that it is ambiguous: everyone can't say who these "four famous catches" are -- only these four nicknames have become public knowledge.

Among them, the first person called "Fierce Turn". I've heard that this guy often walks up and down the hallways of the classroom - and it's fine to walk around, as the other proctors usually do. The point is that this guy often walks halfway and suddenly turns back without warning - this turn will naturally frighten those guys who take the opportunity to start work, so there are many unlucky people who can't hold on to revealing their flaws...

The second person is called "Forward Hat" -- this teacher seems to have had some unfortunate accident when he was young, and he was reshaped by sulfuric acid or nitrate water, leaving the back of his head that everyone is afraid of and worried. In order to cover up his ugliness, he always wore a "forward hat" similar to Uncle Benshan, which became famous. Even if it is a normal person, seeing the appearance of this person will inevitably be hairy, those who are not strong in psychological quality, when cheating, they are already thieves, and when they see this "forward hat", they are afraid that they will be directly frightened and confused, so that they will be in chaos -- therefore, it is rumored in the rivers and lakes that among the "four famous catches", the lethality of the "forward hat" is the most terrifying.

The third person is called "Thirty Seconds" - this is said to be a female teacher with a smile on her face, unlike the forward hat. No matter what happens, the person will always have a harmless-looking smile on his face. But if you are really deceived by his smile, then you really have a too young, too simple Tucson - this guy usually seems to wander around aimlessly, but if anyone really thinks that he has let his guard down and taken the opportunity to make some small moves, then these poor people will find that this "thirty seconds" has wandered behind them without realizing - and the face is still the same harmless smile on his face. Then, the unlucky guys will hear this guy's signature quote: "Give you thirty seconds to turn in the paper yourself, or you will be treated as cheating." But then again, although "Thirty Seconds" is quick to catch people, he is often merciful when he really catches people, and he has accumulated a lot of good reputation for himself.

The fourth person is called "Testosterone Technology" -- "Testosterone Technology" is said to be an old man, and when it is time to take the exam, he will take a broken semiconductor radio to the examination room to hang around, claiming that with this thing, all electromagnetic signals are under control, and there is nowhere to escape from text message cheating. Because the monitoring methods are too primitive, the make-up candidates joked about him and called him "testosterone technology".

"Well, the four famous catchers... can't all be in one examination room, so which one is the one who invigilates Niu Niu?" Jiang Yucheng thought.

Although the "Four Famous Catches" or something are terrible, it is not Jiang Yucheng who has to take the make-up exam after all -- how to deal with these "Four Famous Catches" is not Jiang Yucheng's task. Jiang Yucheng only needs to concentrate on the topic itself. He glanced at the system time in the lower right corner of the screen - it was ten o'clock, and the exam over there had officially begun...

It seems that the "geographical location" that Niu Niu guy said is indeed very advantageous - it didn't take long for the multiple-choice photos to be sent by him. Under normal circumstances, the beginning of the exam paper is often a relatively simple question type, and the multiple-choice questions are generally placed at the first place in the paper - that is, these question types are relatively simple, so Jiang Yucheng can make them directly without even reading a book.

"I'll take a look..." Because Niu Niu's mobile phone camera pixels are too scummy, Jiang Yucheng has a little difficulty watching-

"1. To apply the processing algorithm of one type of data to the processing of another type of data, do you want to use C++?"

Ah, this is simple - Jiang Yucheng knows at a glance, this is one of the important features of C-Template, which is often used when doing data structure assignments before. Encapsulating a data structure into a class and adding a template can be used for any type of data. "The first question is C. Jiang Yucheng replied.

"2. What is the least storage byte occupied by the following data?"

This isn't that difficult - although the answer gives four identical-looking zeros, a closer look reveals a clear difference: the first 0 is int, the second single quote's 0 is char, the double quote's string, and the next 0.0 is a double. Obviously, the one that takes up the least number of bytes is char - just one byte.

"It's really boring...... Jiang Yucheng quickly cleaned up a lot of small questions, "Is there anything ......slightly interesting?"

Although there are individual projects that pit people, the multiple-choice questions are generally very simple, and the same is true for the fill-in-the-blank questions in the back - Jiang Yucheng is confident, and he can at least get more than 50 points for the 60-point choice and fill-in-the-blank questions, so that there is a lot of room for the later questions.

After the multiple-choice and fill-in-the-blank questions, it's time to correct the mistakes - check the existing code for errors. It's a bit challenging to get to this point - of course, the errors aren't well hidden, such as header file references, forgetting to add 1 when initializing C-style strings, and forgetting to get an address when assigning an array value, etc., which are all errors that can be easily found. Of course, because there are several mistakes to correct, in order to prevent himself from missing anything, Jiang Yucheng simply opens VisualStudio directly on the Surface, and opens a new project on the spot to type in the code - maybe he will make mistakes, but the syntax checking and code analysis functions of VS are obviously not wrong......

Note 1: SEAD is the English abbreviation, the whole process of SuppressionofEnemyAirDefences. It is an air combat mission for the purpose of destroying ground anti-aircraft fire from the air to suppress the enemy, or called Wild Weasel (wild weasel), IronHand (iron hand/iron fist), and the mission is extremely risky. Under normal circumstances, electronic attack aircraft carrying out SEAD missions often need to use passive electronic reconnaissance means to judge the location and frequency band information of the enemy's radar by receiving electromagnetic wave signals emitted by the enemy's radar, and then launch anti-radiation missiles to directly destroy the enemy's radar.

During the large-scale exam, the electronic countermeasures unit responsible for the invigilation task will often find out the signal source emitted by the cheating organizers outside the field through electronic reconnaissance means, and then the strip uncles will come to check the water meter according to the location of this signal source, and the whole operation process is very similar to the SEAD operation.