Comparison and Differences between C++ and C Language

The computer prompts "MsVCP71.dll is missing from the computer", which is usually because the system lacks critical running components, which causes the software to not load normally. This article will deeply analyze the functions of the file and the root cause of the error, and provide three efficient solutions to help you quickly restore the program to run. 1. What is MSVCP71.dll? MSVCP71.dll belongs to the core runtime library file of Microsoft VisualC 2003 and belongs to the dynamic link library (DLL) type. It is mainly used to support programs written in C to call standard functions, STL templates and basic data processing modules. Many applications and classic games developed in the early 2000s rely on this file to run. Once the file is missing or corrupted,

Operator overloading in C allows new behaviors of standard operators to be assigned to custom types, 1. Return new objects through member function overloading; 2. Overload = Modify the current object and return reference; 3. Friend function overloading

The basic usage of std::vector includes: 1. Declare vector; 2. Add elements with push_back(); 3. Initialize with initialization list; 4. Loop traversal with range for; 5. Access elements through index or back(); 6. Direct assignment of values to modify elements; 7. Delete the end elements with pop_back(); 8. Call size() to get the number of elements; it is recommended to use constauto& to avoid copying, pre-allocate reserve() to improve performance, and pay attention to checking that it is not empty before access. This data structure is an efficient and preferred way to handle string lists.

Falsesharing occurs when multiple threads modify different variables in the same cache line, resulting in cache failure and performance degradation; 1. Use structure fill to make each variable exclusively occupy one cache line; 2. Use alignas or std::hardware_destructive_interference_size for memory alignment; 3. Use thread-local variables to finally merge the results, thereby avoiding pseudo-sharing and improving the performance of multi-threaded programs.

The answer is that writing a simple TCP client and server requires the socket programming interface provided by the operating system. The server completes communication by creating sockets, binding addresses, listening to ports, accepting connections, and sending and receiving data. The client realizes interaction by creating sockets, connecting to servers, sending requests, and receiving responses. The sample code shows the basic implementation of using the Berkeley socket API on Linux or macOS, including the necessary header files, port settings, error handling and resource release. After compilation, run the server first and then run the client to achieve two-way communication. The Windows platform needs to initialize the Winsock library. This example is a blocking I/O model, suitable for learning basic socket programming.

AbasicMakefileautomatesC compilationbydefiningruleswithtargets,dependencies,andcommands.2.KeycomponentsincludevariableslikeCXX,CXXFLAGS,TARGET,SRCS,andOBJStosimplifyconfiguration.3.Apatternrule(%.o:%.cpp)compilessourcefilesintoobjectfilesusing$

To link libraries in C, you need to use -L to specify the library path when compiling, -l to specify the library name, and use -I to include the header file path to ensure that the static or dynamic library files exist and are named correctly. If necessary, embed the runtime library path through -Wl,-rpath, so that the compiler can find the declaration, the linker can find the implementation, and the program can be successfully built and run.

To correctly configure IntelliSense for C in VSCode, first install Microsoft's C/C extension, then set the compiler path, include directories and C standards. You can manually configure the build information by editing c_cpp_properties.json or automatically obtain the build information using compile_commands.json. Finally, restart and verify that the IntelliSense function is working properly, ensuring that code completion, syntax highlighting and error detection are accurate.