What are the basic components of a c program?

The basic unit of a c program is "function". C programs are composed of functions. There is only one main() function in a C source program. In addition to the main function, there can be several other functions; each function implements a specific operation.

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C programs are composed of functions . Functions are the basic building blocks of C programs. There is only one main() function in a C source program. In addition to the main function, there can be several other functions. Each function implements a specific operation. Therefore, functions are the basic unit of C programs.

A function consists of two parts:

• The description part of the function. Including function name, function type, function attributes, function parameter (formal parameter) name, formal parameter type.

• The function body, that is, the content in { },

  generally includes: Variable definition execution part

Each function The structure is as follows:

函数名() { 语句; }

For example:

int max(int a, int b) { return a > b ? a : b; }

The definition of the function is relatively independent. The main function can be before or after the definition of other functions, but the execution of the program always starts from the main function.

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