the objective c programming language

... after c = getchar(); the variable c contains the next character of input The characters normally come from the keyboard; input from files is discussed in Chapter The function putchar prints a character ... A character constant is an integer, written as one character within single quotes, such as 'x' The value of a character constant is the numeric value of the character in the machine's character ... 10:13:14 PM] Chapter - A Tutorial Introduction main() { int c; while ( (c = getchar()) != EOF) putchar (c) ; } The while gets a character, assigns it to c, and then tests whether the character was the end-of-file...

Ngày tải lên: 14/11/2012, 17:10

... se r .c The code in u se r .c and s ta ck c shares the stack us er c us er c st ac k .c interface information presented in s ta ck h, but the two files are otherwise independent and can be st ac k.h ... ch ar c) c r S ta ck :p op st ac k s { /* check s for underflow and pop */ } ch ar St ac k: po p(s ta ck s) S ta ck :s ta ck S ta ck :c re at e() St ac k: st ac k St ac k: cr ea te { // pick an ... h (c r c { l c. p us h_ fr on t (c ; } vo id pu sh ch ar c) lc pu sh _f ro nt c) c r p op ; ch ar po p() }; c r L is t_ st ac k::p op ch ar Li st _s ta ck po p() { c r x = l c. f ro nt ; ch ar lc...

Ngày tải lên: 29/10/2013, 00:48

... software consultant whose clients have included The Weather Channel, CBS, Burton, and Microsoft Scott Seely, an architect at MySpace, works on the OpenSocial API, one of the world’s most successful ... service access When the Photo Client application executes, the user can either log in or create a new user account Figure 3.1 shows the initial application user interface 03_0321613252_ch03.qxd ... If the login information is new, which is to say unknown to the service, users can create a new service account from the Photo Client application Pressing the Login button only caches the credentials...

Ngày tải lên: 21/02/2014, 06:20

... named data, and a constructor Assuming that the source code of the example is stored in the file acme.cs, the command line csc /t:library acme.cs compiles the example as a library (code without a ... value type, a check is made that the referenced object is a box of the correct value type, and, if the check succeeds, the value in the box is copied out C# ’s unified type system effectively means ... the fact that the declaration order is insignificant in C# is unlike the C+ + language   Introduction n CHRIS SELLS Notice in the previous example the using Acme.Collections statement, which looks...

Ngày tải lên: 15/03/2014, 17:20

... se r .c The code in u se r .c and s ta ck c shares the stack us er c us er c st ac k .c interface information presented in s ta ck h, but the two files are otherwise independent and can be st ac k.h ... ch ar c) c r S ta ck :p op st ac k s { /* check s for underflow and pop */ } ch ar St ac k: po p(s ta ck s) S ta ck :s ta ck S ta ck :c re at e() St ac k: st ac k St ac k: cr ea te { // pick an ... h (c r c { l c. p us h_ fr on t (c ; } vo id pu sh ch ar c) lc pu sh _f ro nt c) c r p op ; ch ar po p() }; c r L is t_ st ac k::p op ch ar Li st _s ta ck po p() { c r x = l c. f ro nt ; ch ar lc...

Ngày tải lên: 17/03/2014, 13:20

... a´; cp = p cp p; // constant pointer // ok // error: cp is constant c on st c r *c on st c pc = s co ns t ch ar co ns t cp c s; c pc 3] = ´a cp c[ 3 a´; c pc = p cp c p; // const pointer to const ... appearing before the * is taken to be part of the base type For example: co ns t c r *c on st c p; ch ar co ns t cp c r c on st p c; ch ar co ns t* pc c on st c r* p c2 co ns t ch ar pc 2; // const pointer ... rm c on st c r* p c = s co ns t ch ar pc s; p c[ 3 = ´g pc 3] g´; pc = p pc p; // pointer to constant // error: pc points to constant // ok c r *c on st c p = s ch ar co ns t cp s; c p[3 = ´a cp...

Ngày tải lên: 12/08/2014, 19:21

... te rn C" c r* s tr cp y (c r*, c on st c r*); ch ar st rc py ch ar co ns t ch ar i nt s tr cm p (c on st c r*, c on st c r*); in t st rc mp co ns t ch ar co ns t ch ar i nt s tr le n (c on st c r*); ... rn C" ch ar st rc py ch ar co ns t ch ar The effect of this declaration differs from the effect of the ‘‘plain’’ declaration e xt er n c r* s tr cp y (c r*, c on st c r*); ex te rn ch ar st rc ... c Other conventions, such as C c xx c pp and c c, are also found The manual for your comC, cx x, cp p, cc piler will be quite specific about this issue The reason for recommending that the definition...

Ngày tải lên: 12/08/2014, 19:21

... Classes Chapter 12 c la ss C r_ ve c { cl as s Ch ar _v ec i nt s z; in t sz c r e le me nt 1]; ch ar el em en t[1 p ub li c: pu bl ic s ta ti c C r_ ve c* n ew _c r_ ve c( i nt s ; st at ic Ch ... around, etc., according to the standard set by the B Bw in w system Our class hierarchy would BB wi nd ow look like this: c la ss cl as s c la ss cl as s c la ss cl as s c la ss cl as s c la ss cl as ... ow The complete hierarchy will consist of our original application-oriented conceptual hierarchy of interfaces expressed as derived classes: c la ss cl as s c la ss cl as s c la ss cl as s c la...

Ngày tải lên: 12/08/2014, 19:21

... ca st Re ce iv er st at ic _c as t(p cr ; pc r) d yn am ic _c as t(p cr ; dy na mi c_ ca st Re ce iv er pc r) Chapter 15 // error: access violation // error: access ... dy na mi c_ ca st accidental violation of the protection of private and protected base classes The purpose of d yn am ic _c as t is to deal with the case in which the correctness of the conversion ... object of its own type: ne w_ ex pr cl on e() c la ss C on d : p ub li c E xp r { cl as s Co nd pu bl ic Ex pr p ub li c: pu bl ic C on d(); Co nd C on d (c on st C on d&); Co nd co ns t Co nd C...

Ngày tải lên: 12/08/2014, 19:21

... b dc a c ab d c ad b c ba d c bd a bc ad bc da bd ac bd ca ca bd ca db cb ad cb da c da b c db a d ab c d ac b d ba c d bc a d ca b d cb a cd ab cd ba da bc da cb db ac db ca dc ab dc ba The ... from the four characters a bc d we can produce 24 permutations: ab cd a bc d a bd c a cb d a cd b a db c a dc b b ac d b ad c ab cd ab dc ac bd ac db ad bc ad cb ba cd ba dc b ca d b cd a b da c ... both the input and the output sequences For example: v oi d f ve ct or ch ar v c) vo id f(v ec to r & vc { v ec to r v vc si ze ve ct or ch ar v(v c. s iz e()); c op y_ ba ck wa rd vc be...

Ngày tải lên: 12/08/2014, 19:21

... ti c l oc al e g lo ba l (c on st l oc al e&); st at ic lo ca le gl ob al co ns t lo ca le s ta ti c c on st l oc al e& c la ss ic ; st at ic co ns t lo ca le cl as si c( ) // copy locale // copy ... ba se p ub li c: pu bl ic // C h f il l() c on st Ch fi ll co ns t; // get filler character C h f il l (C h c h); Ch fi ll Ch ch // set filler character // }; The C+ + Programming Language, Third ... whitespace For example: v oi d f vo id f() { c r c ch ar c; c in >> c ci n c; // } This places the first non-whitespace character from c in into c ci n c In addition, we can read into an array of characters:...

Ngày tải lên: 12/08/2014, 19:21

... under control of a dispatcher, etc Here is the C+ + version: c la ss cl as s c la ss cl as s c la ss cl as s c la ss cl as s c la ss cl as s c la ss cl as s c la ss cl as s c la ss cl as s V eh ic ... example: C ar :C ar Ca r: Ca r() // Car constructor { e pt r = ep tr 0; } P ol ic e_ ca r::P ol ic e_ ca r() // Police_car constructor Po li ce _c ar Po li ce _c ar { e pt r = n ew E me rg en cy ep ... error: car cannot take off } This is a severe underspecification of the interface (of S ta ck :p us h()) that forces dynamic checkSt ac k: pu sh ing rather than static checking The stack s is...

Ngày tải lên: 12/08/2014, 19:21

... ch ar c s ig ne d c r s c, u ns ig ne d c r u c) vo id f (c r c, si gn ed ch ar sc un si gn ed ch ar uc { c r* p c = &u c; ch ar pc uc // error: no pointer conversion s ig ne d c r* p sc = p c; ... d c r s c, u ns ig ne d c r u c) vo id f (c r c, si gn ed ch ar sc un si gn ed ch ar uc { c = 55 25 5; // undefined if plain chars are signed and have bits c = s c; sc c = u c; uc s c = u c; sc ... the C+ + basic source character set (the set used in this book) occurs before the compiler does any other processing Therefore, it does not affect the semantics of the program The standard encoding...

Ngày tải lên: 12/08/2014, 19:21