Is VB still very useful today?

First of all, let's face your question: VB still has a lot of use.

I'm from a VB background, so let me answer your questions in detail.

What is certain is that large and medium-sized projects do not use VB now, and small projects still use a lot, because VB is quick to get started and has low cost, which is especially suitable for low-cost projects.

In addition, the important use of the current VB is mainly reflected in Office programming (VBA), VBA is the embedded programming language of Microsoft Office, is a subset of VBA (in fact, the functions provided are already very powerful), many project reports, statistical descriptions, etc. are implemented with VBA. In 2006, when I was a graduate student, the Nanjing Grid Research Center (a national IT laboratory) was urgently recruiting two VB doctoral students to do a project (graduation**), and it took a long time to find them, because there were too few people who could (skillfully).

There are many people who know a lot of things, but there are very few who are proficient, hehe.

VB can program any program of Windows, which is convenient, but it cannot be changed to some programs on mobile phones and so on.

You can't make up some games, etc.

Able to write small programs such as data management software, network communication software, and so on.

VB can call Windows API functions to make any Windows program.

There are two main versions of VB now, one is VB6, and the other is, VB6 is rarely used now but there are still people who use it, mainly used to develop some unmanaged programs, such as web plugins, and there are still many people who use it for development, yes. .net is one of several languages, but it is not used very much, much less than c.

In general, it is possible to learn it, but it is not necessary to learn it as an important language.

It depends on your major and what you do.

Non-computer-related professional work, I don't know what to do after learning this.

VB is an interpreted language, which requires a runtime library of VB to support the interpretation and execution of VB programs; VC is a kind of editor-friendly translation language, and the source ** must be compiled into an executable file by the compiler before it can be executed. The difference between the two:

Visualization: VC++ visualization is not as good as VB.

Core: The core language of VB is BASC, and the core language of VC is C++.

Function: VC function is more powerful than VB, VC's breadth lies in the manipulation of MFC, which is the encapsulation of Win32API.

Orientation: VB is an object-oriented programming language, while VC's process-oriented programming language is a laughing word.

Difficulty: VB can be used as long as you draw with the mouse to make a Windows graphical interface; Pure VC needs to be implemented entirely by API functions, which is difficult.

Application: VC is suitable for large, complex, and commercial programs that require high efficiency, are more computationally oriented, and are more computational. VB is suitable for the design of small-investment, simple-functional, self-used programs.

VB Software Essentials: VB has a graphical user interface (GUI) and a rapid application development (RAD) system that makes it easy to connect to databases using DAO, RDO, and ADO, or easily create ActiveX controls for efficient generation of type-safe and object-oriented applications.

Programmers can easily build an application quickly using the components provided by VB.

The most frequent members of the B vitamin family are B1, B2, B3 (niacin), B5 (pantothenic acid), B6, B9 (folic acid), and B12 (cobalamin). Their role and the hazards of their deficiency are described below:

1 is a key substance in the process of glucose metabolism. The body's muscles and nerves are most susceptible to carbohydrates for energy. If VB is sufficient, the nerve cells are full of energy, which can relieve anxiety and tension, and increase the tolerance to noise. On the contrary, it leads to a decline in the ability to cope with stress, and even neuritis.

Heart function is affected by the deposition of pyruvate and lactate. Lack of energy in the stomach and intestines, weakness of peristalsis, weakened digestive function, and constipation.

In severe cases, it can cause beriberi. Its evolution process is: weakness - tiredness - irritability, depressed mood - constipation - neuritis - heartache - heart failure - edema.

In 1897, Dutch doctors discovered that eating polished rice could cause beriberi. Mainly because of the lack of vitamin B1, so B1 is also called the anti-beriberi vitamin.

2 It is closely related to the metabolism of sugar, protein and fat. Maintain and improve the health of epithelial tissues, such as the epithelial tissues of the eyes and the mucosal tissues of the digestive tract. In severe deficiency, there will be visual fatigue, corneal hyperemia, angular cheilitis, etc.

When angular cheilitis occurs, doctors often ask people to take riboflavin, which is B2.

3 Poor fat metabolism can cause seborrheic dermatitis, acne, acne, vitamin B supplementation has a good effect.

4. Lack of B group, resulting in gastrointestinal peristalsis weakness and poor secretion of digestive juices, resulting in indigestion, constipation, bad breath, and foul stool.

5 B3 is a coenzyme that constitutes dehydrogenase in the body, plays an important role in the metabolism of carbohydrates, proteins, and fats, and causes neurological, **, and digestive tract lesions when severely deficient, which is called leprosy, also known as triple D, which is manifested as dermatitis, diarrhea and dementia.

6. Help body tissues use oxygen, promote oxygen gain of **, nails, hair tissues, remove or improve dandruff.

7. Removes toxins such as alcohol and nicotine, soothes headaches, migraines, and protects the liver.

8 B11 B12 deficiency will affect the synthesis of thymine, purine, etc., causing DNA synthesis disorders. Eventually, the nucleus of red blood cells becomes immature, resulting in the formation of ineffective red blood cells, which is called megaloblastic anemia.

9 Lack of folic acid in the first 3 months of pregnancy can lead to fetal neural tube malformations, thereby increasing the incidence of split-encephaly, anencephaly.

10 B vitamins (mainly vitamin B1) have a special smell and are the most hated vitamins for mosquitoes, so they have a certain degree of mosquito repellent effect.

Vitamin B complex: Vitamin B1 can promote gastrointestinal function, increase appetite, help digestion, eliminate fatigue, prevent obesity, moisturize and prevent aging. Lean meat, grains, peanuts, sunflower seeds, pine nuts, hazelnuts, purple garlic are rich in vitamin B1

Vitamin B2 has the effect of maintaining the best bodybuilding, making the wrinkles lighter, eliminating the first spots and preventing peripheral neuritis. Insufficient supply of vitamin B2 can cause roughness, wrinkle formation, seborrheic dermatitis, angular cheilitis, cheilitis, acne, gray hair, vitiligo, alopecia areata, etc. Liver, kidney, eggs, cottage cheese, large red mushrooms, pine mushrooms, shiitake mushrooms, almonds in dried fruits, golden enoki in vegetables, alfalfa vegetables rich in vitamin B2 and should be eaten regularly.

Vitamin B6 can promote human fat metabolism and moisturize**; Vitamins B1 and B2 can promote the metabolism of the first class and smooth blood circulation, so they are called "beauty vitamins".Foods containing vitamin B1 and B2 include animal offal, fish, oysters, stinky tofu, soy tofu, etc.

It's still hard to learn C language well! VC and C++ are about the same level of difficulty as VB. VB is a high-level language, and C language is a language between high-level languages and low-level languages, so the functions are much more than VB and VC (I personally think), and assembly language is still essential if you want to become a master!

VB is a programming language developed by Microsoft, most of the semantics borrow from the statements of Basice, but the graphical programming interface is realized, and the object orientation is realized, called Visurl Basic for short, VB, which can be used to make some small programs and complete some desired functions, and has now developed to.