


Summary of points to note about interview questions and answers
The following is a list of 125 basic C# interview questions and answers. These interview questions are simple, straightforward, and cover the most basic concepts of C#, most of which are related to object-oriented concepts. So if you are preparing for C# interview, I suggest you must master these 125 basic C# interview questions and answers to review your C# concepts. So now let’s take a look at this list of 125 essential C# interview questions and answers. 1. What is C#? C# (pronounced "C sharp") is a simple, unconventional, object-oriented, type-safe programming language. C and C++ programmers will quickly become familiar with it. The highly productive Rapid Application Development (RAD) language is combined in C#. 2. What are the annotation types in C#? There are three annotation types in C#. Single line (//) Multiple lines (/* */) Page/XML comments (///). 3. What are the namespaces used in C#.NET? A namespace is a logical grouping of types. using System;using System.Collections.Generic;using System.Windows.
1. Share 125 basic C# interview questions and answers
# Introduction: This article is a list of 125 basic C# interview questions and answers. These interview questions are simple, straightforward, and cover the most basic concepts of C#, most of which are related to object-oriented concepts. So if you are preparing for C# interview, I suggest you must master these 125 basic C# interview questions and answers to review your C# concepts. So now let’s take a look at this list of 125 essential C# interview questions and answers.
2. java multithreading and concurrency basic interview questions and answers
##Introduction: Multi-threading and concurrency issues are one of the questions that interviewers like to ask in Java technology interviews. Here, most of the important questions are listed from an interview perspective, but you should still have a firm grasp of the basic knowledge of Java multi-threading to deal with the problems you encounter in the future.
3. Programmer Interview: Telephone Interview Questions and Answers Top 42 (Part 1)
Introduction::This article It mainly introduces the programmer interview: Top 42 telephone interview questions and answers (Part 1). Students who are interested in PHP tutorials can refer to it.
4. Programmer Interview: Telephone Interview Questions and Answers Top 42 (Part 2)
Introduction::This article It mainly introduces the programmer interview: Top 42 telephone interview questions and answers (Part 2). Students who are interested in PHP tutorials can refer to it.
5. 28 MongoDB NoSQL database interview questions and answers_MySQL
Introduction: MongoDB is currently the best Free and open source NoSQL database for documents. If you are preparing for a technical interview with MongoDB NoSQL database, you’d better take a look at the following MongoDB NoSQL interview questions and answers. These MongoDB NoSQL interview questions and answers cover basic NoSQL database concepts
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In C, the char type is used in strings: 1. Store a single character; 2. Use an array to represent a string and end with a null terminator; 3. Operate through a string operation function; 4. Read or output a string from the keyboard.

The usage methods of symbols in C language cover arithmetic, assignment, conditions, logic, bit operators, etc. Arithmetic operators are used for basic mathematical operations, assignment operators are used for assignment and addition, subtraction, multiplication and division assignment, condition operators are used for different operations according to conditions, logical operators are used for logical operations, bit operators are used for bit-level operations, and special constants are used to represent null pointers, end-of-file markers, and non-numeric values.

In C language, special characters are processed through escape sequences, such as: \n represents line breaks. \t means tab character. Use escape sequences or character constants to represent special characters, such as char c = '\n'. Note that the backslash needs to be escaped twice. Different platforms and compilers may have different escape sequences, please consult the documentation.

The difference between multithreading and asynchronous is that multithreading executes multiple threads at the same time, while asynchronously performs operations without blocking the current thread. Multithreading is used for compute-intensive tasks, while asynchronously is used for user interaction. The advantage of multi-threading is to improve computing performance, while the advantage of asynchronous is to not block UI threads. Choosing multithreading or asynchronous depends on the nature of the task: Computation-intensive tasks use multithreading, tasks that interact with external resources and need to keep UI responsiveness use asynchronous.

In C language, the main difference between char and wchar_t is character encoding: char uses ASCII or extends ASCII, wchar_t uses Unicode; char takes up 1-2 bytes, wchar_t takes up 2-4 bytes; char is suitable for English text, wchar_t is suitable for multilingual text; char is widely supported, wchar_t depends on whether the compiler and operating system support Unicode; char is limited in character range, wchar_t has a larger character range, and special functions are used for arithmetic operations.

In C language, char type conversion can be directly converted to another type by: casting: using casting characters. Automatic type conversion: When one type of data can accommodate another type of value, the compiler automatically converts it.

The char array stores character sequences in C language and is declared as char array_name[size]. The access element is passed through the subscript operator, and the element ends with the null terminator '\0', which represents the end point of the string. The C language provides a variety of string manipulation functions, such as strlen(), strcpy(), strcat() and strcmp().

There is no built-in sum function in C language, so it needs to be written by yourself. Sum can be achieved by traversing the array and accumulating elements: Loop version: Sum is calculated using for loop and array length. Pointer version: Use pointers to point to array elements, and efficient summing is achieved through self-increment pointers. Dynamically allocate array version: Dynamically allocate arrays and manage memory yourself, ensuring that allocated memory is freed to prevent memory leaks.
