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Using the features of the programming language can not only simplify the program, but also improve the execution efficiency of the program. First, let's look at an example program that uses sizeof () to improve program efficiency. Figure 1 shows the code before sizeof () is not used. The background information must be explained here. Here, the alarm_string variable is defined as a char array with a length o

A protocol defines a blueprint for the methods, attributes, and other requirements that are needed for a particular task or function. The protocol itself does not provide an implementation of these requirements, it simply describes a blueprint for the implementation of a task or function. A protocol is similar to an interface definition in the Java language, which describes what an implementation can do, but does not itself contain any implementati

Preliminary Analysis of the Structure in C language programming, analysis of the C language structure The C-language struct is one of the powerful functions of C and a favorable condition for C ++ language derivation. In fact, when the struct contains function pointers, stru

Preprocessing the biggest sign is uppercase, although this is not a standard, but please capitalize in the use, for their own, but also for posterity. Preprocessor in general, the most commonly used or macro, here is a summary of the use of preprocessor. #include #define Macro_of_mine #ifdef Macro_of_mine #else #endif The above five preprocessing is most commonly seen, the first one represents the inclusion of a header file, you can understand that without it many funct

socket. * * BREAK; /* Find can exit, of course, may not be found, then the value of P must be null/} if (P = = null) {/* error handling/}/*-//set the End-to-end information memset (recv_ho St, 0, sizeof (recv_host)); recv_host.sin_family = af_inet; RECV_HOST.SIN_ADDR.S_ADDR = inet_addr ("127.0.0.1"); Recv_host.sin_port = htons (6000); * * * Send the message/* Here, the sender's IP address and port number and other types of information, with this function of the call, automatically bound o

Atitit. process-oriented programming language exception handling C language ASP vbs of the Try Catch Implement1. Return value method . and global ERROR variable Method 12. Throw Exception Err.Raise 13. Implement try on Error Resume Next 14. Catch Practice 25. Reference 21. Return value method. andGlobalERROR Variable methodreturn value method .C

First create a single view project for SwiftThen create the OC file directly in the project:Then select the OC language and ask if you want to automatically create intermediate files for OC and Swift:Then there are three files in the project folder:Now an example is written in the OC header file and the implementation file:Then in the swift language and the Obje...ridging-header.h fileYou can then use it di

In order not to cause misunderstanding of programmers and development of language disputes, small make a statement first, this list is the most annoying programming language developers, the main discussion is web development, such as your favorite in the PHP language programming