what is "typedef" in c++
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The document discusses what typedef is in C/C++. It defines typedef as giving a type a new name and explains that it can be used to define structs, unions, functions and other types with alternative name(s). Examples are provided to illustrate how typedef can simplify type declarations and make code more readable.
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what is "typedef" in c++
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- 3. Ä ^{ Ξ C Šó {z typedef ;.A^ a. O¶ typedef A:¯K ½Â² Ã'a. typedef (Š {zE,(² ̇SN typedef Ä ^{ 1 Ξ C Šó {z a. O¶ ½Â² Ã'a. {zE,(² typedef ;.A^ 2 ª² a.½Â £N¼ê typedef A:¯K 3 typedef†define «O typedef •;ìá5 typedef†const (Š 4 yankchina@gmail.com What is typedef
- 4. Ä ^{ Ξ C Šó {z typedef ;.A^ a. O¶ typedef A:¯K ½Â² Ã'a. typedef (Š {zE,(² Ξ C Šó {z •Ð C Šó¥‡½Â struct žéæ† s t r u c t tagPOINT{ int x , y ; }; s t r u c t tagPOINT p ; // c s t y l e d e f i n i t i o n Œ±^ typedef 5{zù ½Â•ª t y p e d e f s t r u c t tagPOINT{ int x , y ; }POINT ; POINT p ; // c s t y l e d e f i n i t i o n ù Ò' 5 •ª ˜ struct §5¿ struct 3 C ¥¢S þŒ± [ C + + class §ùž typedef Òƒ k^ £‡ éXe˜‡Š^¤ yankchina@gmail.com What is typedef
- 5. Ä ^{ Ξ C Šó {z typedef ;.A^ a. O¶ typedef A:¯K ½Â² Ã'a. typedef (Š {zE,(² ̇SN typedef Ä ^{ 1 Ξ C Šó {z a. O¶ ½Â² Ã'a. {zE,(² typedef ;.A^ 2 ª² a.½Â £N¼ê typedef A:¯K 3 typedef†define «O typedef •;ìá5 typedef†const (Š 4 yankchina@gmail.com What is typedef
- 6. Ä ^{ Ξ C Šó {z typedef ;.A^ a. O¶ typedef A:¯K ½Â² Ã'a. typedef (Š {zE,(² a. O¶ ù´ typedef §5¿ÙØ´{ü ÷½Â§ ´ï á ˜‡#a.quot;¤±ÙþŒ±ïá õ a.u Å›§èF 5†S 5ÑpNõquot; 'X‡(²,‡• a.§ØU c h a r ∗ pa , pb ; AT t y p e d e f c h a r ∗ PCHAR ; PCHAR pa , pb ; yankchina@gmail.com What is typedef
- 7. Ä ^{ Ξ C Šó {z typedef ;.A^ a. O¶ typedef A:¯K ½Â² Ã'a. typedef (Š {zE,(² ̇SN typedef Ä ^{ 1 Ξ C Šó {z a. O¶ ½Â² Ã'a. {zE,(² typedef ;.A^ 2 ª² a.½Â £N¼ê typedef A:¯K 3 typedef†define «O typedef •;ìá5 typedef†const (Š 4 yankchina@gmail.com What is typedef
- 8. Ä ^{ Ξ C Šó {z typedef ;.A^ a. O¶ typedef A:¯K ½Â² Ã'a. typedef (Š {zE,(² ½Â² Ã'a. • Jp§S £‡5§.^ typedef 5½Â² Ã'a .§X t y p e d e f l o n g d o u b l e REAL ; REAL v a l u e ; // t y p e d e f d o u b l e REAL ; // t y p e d e f f l o a t REAL ; ª² ž§•‡?U typedef ÒŒ± §3IO¥ ST L ¥Ò Œþ¦^ TE|§X sizet quot; yankchina@gmail.com What is typedef
- 9. Ä ^{ Ξ C Šó {z typedef ;.A^ a. O¶ typedef A:¯K ½Â² Ã'a. typedef (Š {zE,(² ̇SN typedef Ä ^{ 1 Ξ C Šó {z a. O¶ ½Â² Ã'a. {zE,(² typedef ;.A^ 2 ª² a.½Â £N¼ê typedef A:¯K 3 typedef†define «O typedef •;ìá5 typedef†const (Š 4 yankchina@gmail.com What is typedef
- 10. Ä ^{ Ξ C Šó {z typedef ;.A^ a. O¶ typedef A:¯K ½Â² Ã'a. typedef (Š {zE,(² {zE,(² typedef •p? ^{3u{zE,(²§Ù2•A^3 /•.0§S¥quot;duÙ†/÷0é C§ …Š{¿ÂÄ–§ ´•J± Ö†n) quot;ùÒ‡ ) typedef $1 Å›quot;X t y p e d e f v o i d ( ∗ pFunParam ) ( ) ; t y p e d e f v o i d ( ∗ pFunx ) ( pFunParam ) ; pFunx b [ 1 0 ] ; ´Ÿo¿g§ÙqTXÛ^Qº yankchina@gmail.com What is typedef
- 11. Ä ^{ Ξ C Šó {z typedef ;.A^ a. O¶ typedef A:¯K ½Â² Ã'a. typedef (Š {zE,(² E,(² Ö•{ /m† K0µlCþ¶wå§k m§2 †§- ˜‡ )ÒÒN= Ö ••¶)ÒS©Û ÒaÑT)Ò§„´U km †•ª†–(åquot;'X t y p e d e f i n t ( ∗FUNC ) ( i n t ∗ ) ; ù´˜‡k˜‡ ê• ëê …ˆ£Š• ê ¼ê• §ù 2 Öe¡ “èÒÐà FUNC p ; ^ typedef •{5(²˜‡¼ê• LK' ©•{•Ð FUNC p [ 5 ] ; // / i n t ( ∗ p [ 5 ] ) ( i n t ∗ ) ; yankchina@gmail.com What is typedef
- 12. Ä ^{ Ξ C Šó {z typedef ;.A^ a. O¶ typedef A:¯K ½Â² Ã'a. typedef (Š {zE,(² typedef kÏuMï² Ã'a.§$–UÛõE,ÚJun) Š{§;•jquot;§l ¦“è•èFquot; yankchina@gmail.com What is typedef
- 13. Ä ^{ typedef ;.A^ ª² a.½Â typedef A:¯K £N¼ê typedef (Š ̇SN typedef Ä ^{ 1 Ξ C Šó {z a. O¶ ½Â² Ã'a. {zE,(² typedef ;.A^ 2 ª² a.½Â £N¼ê typedef A:¯K 3 typedef†define «O typedef •;ìá5 typedef†const (Š 4 yankchina@gmail.com What is typedef
- 14. Ä ^{ typedef ;.A^ ª² a.½Â typedef A:¯K £N¼ê typedef (Š ª² a.½Â typedef ¦^•õ /•´Mï´uPÁ…£‡ a. ¶quot;X typedef int size ; v o i d measure ( s i z e ∗ p s z ) ; size array [ 4 ] ; yankchina@gmail.com What is typedef
- 15. Ä ^{ typedef ;.A^ ª² a.½Â typedef A:¯K £N¼ê typedef (Š ̇SN typedef Ä ^{ 1 Ξ C Šó {z a. O¶ ½Â² Ã'a. {zE,(² typedef ;.A^ 2 ª² a.½Â £N¼ê typedef A:¯K 3 typedef†define «O typedef •;ìá5 typedef†const (Š 4 yankchina@gmail.com What is typedef
- 16. Ä ^{ typedef ;.A^ ª² a.½Â typedef A:¯K £N¼ê typedef (Š £N¼ê typedef ~^u ¼ê• §3½Â£N¼êžÙ J •Ðquot; t y p e d e f i n t ( ∗ PF ) ( c o n s t c h a r ∗ , c o n s t c h a r ∗ ) ; PF R e g i s t e r ( PF p f ) ; XJØ^ typedef 5½Â¼ê• §KÙ(²Òé„¡ i n t (∗ R e g i s t e r ( i n t (∗ pf ) ( const char ∗ , const char ∗ ) ) yankchina@gmail.com What is typedef
- 17. Ä ^{ typedef typedef† define « O † ;.A^ typedef typedef •; ì á5 A:¯K typedef † typedef† const (Š ̇SN typedef Ä ^{ 1 Ξ C Šó {z a. O¶ ½Â² Ã'a. {zE,(² typedef ;.A^ 2 ª² a.½Â £N¼ê typedef A:¯K 3 typedef†define «O typedef •;ìá5 typedef†const (Š 4 yankchina@gmail.com What is typedef
- 18. Ä ^{ typedef typedef† define « O † ;.A^ typedef typedef •; ì á5 A:¯K typedef † typedef† const (Š «O typedef†define • O“èŒ ½5 åO¶§ typedef ´^5½Â~þquot;¤± def ine ´{ü iÎG def ine O“§vk?Û a.u õUquot; ïÆæ^ typedef 5½Âa.Ú P•(² ^ const 5½Â~þ ^ def ine 5½Âý?ÈÞI£Î &^ def ine ½Â÷ yankchina@gmail.com What is typedef
- 19. Ä ^{ typedef typedef† define « O † ;.A^ typedef typedef •; ì á5 A:¯K typedef † typedef† const (Š «O typedef†define • O“èŒ ½5 åO¶§ typedef ´^5½Â~þquot;¤± def ine ´{ü iÎG def ine O“§vk?Û a.u õUquot; ïÆæ^ typedef 5½Âa.Ú P•(² ^ const 5½Â~þ ^ def ine 5½Âý?ÈÞI£Î &^ def ine ½Â÷ yankchina@gmail.com What is typedef
- 20. Ä ^{ typedef typedef† define « O † ;.A^ typedef typedef •; ì á5 A:¯K typedef † typedef† const (Š «O typedef†define • O“èŒ ½5 åO¶§ typedef ´^5½Â~þquot;¤± def ine ´{ü iÎG def ine O“§vk?Û a.u õUquot; ïÆæ^ typedef 5½Âa.Ú P•(² ^ const 5½Â~þ ^ def ine 5½Âý?ÈÞI£Î &^ def ine ½Â÷ yankchina@gmail.com What is typedef
- 21. Ä ^{ typedef typedef† define « O † ;.A^ typedef typedef •; ì á5 A:¯K typedef † typedef† const (Š «O typedef†define • O“èŒ ½5 åO¶§ typedef ´^5½Â~þquot;¤± def ine ´{ü iÎG def ine O“§vk?Û a.u õUquot; ïÆæ^ typedef 5½Âa.Ú P•(² ^ const 5½Â~þ ^ def ine 5½Âý?ÈÞI£Î &^ def ine ½Â÷ yankchina@gmail.com What is typedef
- 22. Ä ^{ typedef typedef† define « O † ;.A^ typedef typedef •; ì á5 A:¯K typedef † typedef† const (Š ̇SN typedef Ä ^{ 1 Ξ C Šó {z a. O¶ ½Â² Ã'a. {zE,(² typedef ;.A^ 2 ª² a.½Â £N¼ê typedef A:¯K 3 typedef†define «O typedef •;ìá5 typedef†const (Š 4 yankchina@gmail.com What is typedef
- 23. Ä ^{ typedef typedef† define « O † ;.A^ typedef typedef •; ì á5 A:¯K typedef † typedef† const (Š typedef •;ìá5 typedef ´˜‡•;ìa'…i§ ÙØU † auto, extern, mutable, static, register é^quot;ù¿Ø´ ` typedef ¬ý K•é– •;A5¶ ´3Šé ¤ þ§ typedef (²wå5– static, extern a. Cþ(²quot; t y p e d e f r e g i s t e r i n t FAST COUNTER ; // e r r o r yankchina@gmail.com What is typedef
- 24. Ä ^{ typedef typedef† define « O † ;.A^ typedef typedef •; ì á5 A:¯K typedef † typedef† const (Š ̇SN typedef Ä ^{ 1 Ξ C Šó {z a. O¶ ½Â² Ã'a. {zE,(² typedef ;.A^ 2 ª² a.½Â £N¼ê typedef A:¯K 3 typedef†define «O typedef •;ìá5 typedef†const (Š 4 yankchina@gmail.com What is typedef
- 25. Ä ^{ typedef typedef† define « O † ;.A^ typedef typedef •; ì á5 A:¯K typedef † typedef† const (Š typedef†const typedef ´½Â ˜«a. #O¶§ ØÓu÷§Ø´ {ü iÎGO†quot; Ù3u const '…iÓžÑyž§ØU{ ü/?1iÎGO†§ ‡c[©ÛÙa.'équot; t y p e d e f c h a r ∗ PSTR ; i n t mystrcmp ( c o n s t PSTR , c o n s t PSTR ) ; ùp const P ST R ƒ u const char∗ „ ´ char ∗ const quot; yankchina@gmail.com What is typedef
- 26. Ä ^{ typedef ;.A^ typedef A:¯K typedef (Š ïÄ C++ Š{§•UN› rŒ†`{quot; C++ yankchina@gmail.com What is typedef