What function should be included in a C source program at least?

A c source program should include at least one function:

A main function. That is the main function.

The main function is the entry point of the program. No matter it is anywhere under the program header file, when the program is executed, the main function is called first, and then the main function is used to call each function. To give a vivid example, there is "Cooking" program, then the process of "cooking" is the "main function". In the main function, depending on the situation, you may also need to call sub-functions such as "buying vegetables, cutting vegetables, and cooking vegetables".

Related introduction:

C language is a general-purpose, procedural-oriented computer programming language. In 1972, Dennis Ritchie designed and developed the C language at Bell Telephone Laboratories in order to port and develop the UNIX operating system.

The C language is a widely used computer language that is as popular as the Java programming language, and both are widely used among modern software programmers.

The latest C language standard is C11, and the C language standard before it is C99.

Recommended tutorial: "c#"

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