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title: "Program Structure | Microsoft Docs"
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# Program Structure
This section gives an overview of C programs and program execution. Terms and features important to understanding C programs and components are also introduced. Topics discussed include:  
  
-   [Source files and source programs](../c-language/source-files-and-source-programs.md)  
  
-   [The main function and program execution](../c-language/main-function-and-program-execution.md)  
  
-   [Parsing command-line arguments](../c-language/parsing-c-command-line-arguments.md)  
  
-   [Lifetime, scope, visibility, and linkage](../c-language/lifetime-scope-visibility-and-linkage.md)  
  
-   [Name spaces](../c-language/name-spaces.md)  
  
 Because this section is an overview, the topics discussed contain introductory material only. See the cross-referenced information for more detailed explanations.  
  
## See Also  
 [C Language Reference](../c-language/c-language-reference.md)