Functions are the basic unit of organizing code in C, used to realize code reuse and modularization; 1. Functions are created through declarations and definitions, such as intadd(inta,intb) returns the sum of the two numbers; 2. Pass parameters when calling the function, and return the result of the corresponding type after the function is executed; 3. The function without return value uses void as the return type, such as voidgreet(stringname) for outputting greeting information; 4. Using functions can improve code readability, avoid duplication and facilitate maintenance, which is the basic concept of C programming.

Gotohttps://code.visualstudio.comanddownloadtheWindowsUserInstaller.2.Runthe.exefile,allowchanges,andselectrecommendedoptionsincludingaddingtoPATHandcreatingadesktopshortcut.3.ClickFinishtolaunchVSCodeafterinstallation.4.Optionallyinstallusefulextens

VSCodeisalightweight,cross-platformcodeeditorwithIDE-likefeaturesviaextensions,idealforwebandopen-sourcedevelopment;2.VisualStudioisafull-featured,Windows-onlyIDEdesignedforcomplex.NET,C ,andenterpriseapplications;3.VSCodeperformsfasteronlower-endma

decltype is a keyword used by C 11 to deduce expression types at compile time. The derivation results are accurate and do not perform type conversion. 1. decltype(expression) only analyzes types and does not calculate expressions; 2. Deduce the variable name decltype(x) as a declaration type, while decltype((x)) is deduced as x due to lvalue expression; 3. It is often used in templates to deduce the return value through tail-set return type auto-> decltype(t u); 4. Complex type declarations can be simplified in combination with auto, such as decltype(vec.begin())it=vec.begin(); 5. Avoid hard-coded classes in templates

C folderexpressions is a feature introduced by C 17 to simplify recursive operations in variadic parameter templates. 1. Left fold (args...) sum from left to right, such as sum(1,2,3,4,5) returns 15; 2. Logical and (args&&...) determine whether all parameters are true, and empty packets return true; 3. Use (std::cout

ABinarySearchTree(BST)isabinarytreewheretheleftsubtreecontainsonlynodeswithvalueslessthanthenode’svalue,therightsubtreecontainsonlynodeswithvaluesgreaterthanthenode’svalue,andbothsubtreesmustalsobeBSTs;1.TheC implementationincludesaTreeNodestructure

InstalltheSQLToolsextensionandtheappropriatedriverextensionforyourdatabasetypeinVSCode.2.OpentheCommandPalette,select"SQLTools:NewConnection",chooseyourdatabasetype,andenterconnectiondetailssuchashost,port,username,password,anddatabasename.

TochangethefontsizeinVSCode,gotoFile>Preferences>Settings,searchfor"fontsize",andmodifythe"Editor:FontSize"value.2.Alternatively,manuallyeditthesettings.jsonfilebyopeningtheCommandPalette,selecting"Preferences:OpenSetti