What does C language mean, and what does C language mean?

Combined Language is a computer programming language. It has the characteristics of both high-level language and assembly language. It can be used as a working system design language to write system applications, or as an application design language to write applications that do not rely on computer hardware.

Defines the type of information that is the data in the Student Table.

C is the first language to learn programming, and there are very few programmers who don't know C. In addition to allowing programmers to understand the relevant concepts of programming and taking you into the door of programming, C language can also let programmers understand the operating principles of programs, such as how the various parts of the computer interact, what kind of state the program is in memory, and what kind of "love and hate" between the operating system and the user program.

Disadvantages of the C language1. The shortcomings of C language are mainly manifested in the weak encapsulation of data, which makes C have great defects in data security, which is also a major difference between C and C++.

2. The syntax restrictions of C language are not too strict, the type constraints of variables are not strict, which affects the security of the program, and does not check the array subscript out-of-bounds. From an application point of view, C is more advanced than other high-level languages.

Harder to master. In other words, for those who use the C language, they are required to be more proficient in programming.

C is a process-oriented, abstract, general-purpose programming language.

C is designed to provide a programming language that can compile in a simple way, handle low-level memory, generate only a small amount of machine code, and run without any runtime support. C is often used to write system software.

The C language has a complete theoretical system with a long history of development, and has a very important position in the programming language.

cThe main features of the language:

C language is a structured language, it has a clear level, can be written in the form of modules, is very conducive to program debugging, and C language processing and performance capabilities are very powerful, relying on very comprehensive operators and a variety of data types, but also through the pointer type of direct addressing of memory and direct operation of hardware.

C language contains a wide range of data types, including not only traditional character, integer, floating-point and other data types, but also other assembly language does not have data types, among which pointer type data is the most flexible, and various data structures can be calculated through C language programming.

Refer to the above content: Encyclopedia-C language.

: There are two meanings in the C language, one is to take the address character, which is a monocular operator; The other is the bitwise operator, which means "bitwise and", which is a binocular operator. C is a process-oriented, abstract general-purpose programming language that is widely used in low-level development.

C can compile and process low-level memory in a simple way.

<>C language is a process-oriented, abstract general-purpose programming language, which is widely used in low-level development. C can compile and process low-level memory in a simple way. C is an efficient programming language that produces only a small number of machine languages and does not require any runtime environment support.

It has the characteristics of both high-level language and assembly language.

C language characteristics: concise language, with structured control and missing sentences, rich data class management type, rich operators, can directly operate on physical addresses, has good portability, can generate high-quality, high-efficiency program execution.

C language! Represents non-operations in logical operations.

It is a non-operator in C, and using it in front of a smoldering variable will construct a non-operator expression that expresses the return result of the ridge as a boolean (i.e., only true or false). When using a variable, if the variable is not a Boolean data type, it will be forcibly converted to a Boolean type and then used, for example, the integer variable 123 will be converted to true, and the integer variable 0 will be converted to false.

C language: It is a general-purpose computer programming language with a wide range of applications. C is designed to provide a programming language that can compile in a simple way, handle low-level memory, generate a small amount of machine code, and run without any runtime support.

C Operator: A symbol that speaks for a specific operation, and it is a tool for constructing C language expressions. In addition to the three common categories, arithmetic operators, relational operators and logical operators, there are also some operators used to complete special tasks, such as bitwise operators.

Priority: In the C language, there are 15 levels of operator priority. Level 1 is the highest, and level 15 is the lowest.

In an expression, the higher priority precedes the lower priority. However, when the operators on both sides of an operation amount have the same priority, they are treated in the binding direction specified by the combination of operators.

？It is used to judge the truth of the conditions, and is used to determine the value according to the judgment results.

For example, the general form of a conditional expression is: Expression 1?Expression 2: Expression 3.

The basic structure of the C language:

1. Data type.

C's data types include: integer, character, real or float (single and double), enumeration, array, struct, common, pointer, and null.

2. Constants and variables.

The value of a constant cannot be changed, and the name of the symbol constant is usually capitalized.

A variable is the amount by which the value of an identifier can be changed. An identifier is a sequence of letters, numbers, or underscores that begin with a letter or underscore, note that the first character must be a letter or underscore, otherwise it is an invalid variable name. Variables are assigned a Xiangfan Correspondence Storage Unit at compile time.