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聽聽聽聽C++鏂版墜涓鑸湁涓や釜甯歌鐨勮瑙o細(xì)
1錛変換浣曠被濡傛灉娌℃湁瀹氫箟榛樿鏋勯犲嚱鏁幫紝緙栬瘧鍣ㄥ氨浼?xì)鍚堟垚鍑哄畠鏉ャ?br />2錛夌紪璇戝櫒鍚堟垚鍑烘潵鐨勯粯璁ゆ瀯閫犲嚱鏁頒細(xì)鏄庣‘璁懼畾鈥滅被涓瘡涓涓暟鎹垚鍛樼殑榛樿鍊尖濄?br />
姝e浣犳墍瑙侊紝涓婅堪涓や釜娌℃湁涓涓槸鐪熺殑錛?br />-------------------------------------------------------------------------------------------
Summary:聽
聽聽聽There are four characteristics of a class under which the compiler needs to synthesize a default constructor for classes that declare no constructor at all. The Standard refers to these as implicit, nontrivial default constructors. The synthesized constructor fulfills only an implementation need. It does this by invoking member object or base class default constructors or initializing the virtual function or virtual base class mechanism for each object. Classes that do not exhibit these characteristics and that declare no constructor at all are said to have implicit, trivial default constructors. In practice, these trivial default constructors are not synthesized.
Within the synthesized default constructor, only the base class subobjects and member class objects are initialized. All other nonstatic data members, such as integers, pointers to integers, arrays of integers, and so on, are not initialized. These initializations are needs of the program, not of the implementation. If there is a program need for a default constructor, such as initializing a pointer to 0, it is the programmer's responsibility to provide it in the course of the class implementation.
Programmers new to C++ often have two common misunderstandings:
1)
That a default constructor is synthesized for every class that does not define one
2)
That the compiler-synthesized default constructor provides explicit default initializers
聽聽 for each data member declared within the class
As you have seen, neither of these is true.
--------------------------------------------------------------------------------------------
聽聽聽聽cout聽<<聽0x0A;聽聽聽聽//聽print聽type聽int聽10
聽聽聽聽cout聽<<聽'聽';
聽聽聽聽cout聽<<聽0x41;聽聽聽聽//聽print聽type聽int聽65,聽which聽is聽decimal聽number聽of聽'A'.
聽聽聽聽cout聽<<聽'聽';
聽聽聽聽//聽Test2:聽Directly聽insert聽'\x41'聽to聽ostream
聽聽聽聽cout聽<<聽'\x41';聽聽聽聽//聽'\x41'聽is聽transformed聽char,聽which聽means聽type聽char聽'A'.
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 //聽So,聽it聽prints聽type char 'A'聽 on screen.
聽聽聽聽cout聽<<聽'聽';
聽聽聽聽//聽Test3:聽First聽assign聽0x41聽to聽char聽variable,聽then聽output聽it.
聽聽聽聽char聽char_out聽=聽0x41;聽聽聽聽//聽char_out聽is聽equal聽'A'聽which聽is聽type聽int聽65.
聽聽聽聽cout聽<<聽char_out;聽聽聽聽聽聽聽聽//聽it聽prints聽type聽char聽'A'聽on聽screen.
聽聽聽聽cout聽<<聽'聽';
聽聽聽聽//聽Test4:聽First聽cast聽0x0A聽to聽char,聽then聽output聽it.
聽聽聽聽cout聽<<聽static_cast<char>(0x41); // it prints type char 'A' on screen.
聽聽聽聽
聽聽聽聽cout聽<<聽'聽';
聽聽聽聽//聽Test5:聽Directly聽insert聽hexdecimal聽type聽number聽of聽'A'
聽聽聽聽cout聽<<聽'聽'聽<<聽std::hex聽<<聽0x0A;聽//聽it聽prints聽type聽char 'a' on screen.
聽聽聽聽int聽int_out聽=聽'0x41';
聽聽聽聽cout聽<<聽int_out;聽//聽it聽prints聽type聽int聽8342**
聽聽聽聽cout聽<<聽endl;
//
聽Driver.h聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽
//
聽fine:comment
#ifndef聽INCLUDED_DRIVER聽聽聽聽聽聽聽聽聽
//
聽fine:internal聽include聽guard
#define
聽INCLUDED_DIRVER
#ifndef聽INCLUDED_NIFTY聽聽聽聽聽聽聽聽聽聽
//
聽fine:redundant聽include聽guard
#include聽
"
nifty.h
"
#endif
#define
聽PI聽3.141592聽聽聽聽聽聽聽聽聽聽聽聽聽
//
聽Avoid:macro聽constant
#define
聽MIN(X)聽((X)<(Y)?(X):(Y))聽
//
聽Avoid:macro聽constant
class
聽ostream;聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽
//
聽fine:聽class聽dec.
struct
聽DriverInit;聽聽聽聽聽聽聽聽聽聽聽
//
聽fine:聽class聽dec.
union聽Uaw;聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽
//
聽fine:聽class聽dec.
extern
聽
int
聽globalVariable;聽
//
聽Avoid:external聽data聽dec.
static
聽
int
聽fileScopeVariable;聽
//
聽Avoid:internal聽data聽def.
const
聽
int
聽BUFFER_SIZE聽
=
聽
256
;聽
//
聽Avoid:const聽data聽def.
enum
聽Boolean聽
{聽zero,聽one聽}
;聽聽
//
聽Avoid:enumeration聽at聽file聽scope
typedef聽
long
聽BigInt;聽聽聽聽聽聽聽聽聽
//
聽typedef聽at聽file聽scope
class
聽Driver聽
{
聽聽聽
enum
聽Color聽
{聽RED,聽GREEN聽}
;聽
//
聽fine:enumeration聽in聽class聽scope
聽聽聽typedef聽
int
聽(Dirver::
*
PMF)();聽
//
聽fine:聽typedef聽in聽class聽scope
聽聽聽
static
聽
int
聽s_count;聽聽聽聽聽聽
//
聽fine:static聽member聽dec.
聽聽聽
int
聽d_size;聽聽聽聽
//
聽fine:聽member聽data聽def.
private
:
聽聽聽
struct
聽Pnt聽
{
聽聽聽聽聽聽
short
聽
int
聽d_x,聽d_y;
聽聽聽聽聽聽Pnt(
int
聽x,聽
int
聽y)聽
聽聽聽聽聽聽聽:聽d_x(x),聽d_y(y)聽
{聽}
聽聽聽}
;聽聽聽聽聽聽聽聽聽聽聽聽聽聽
//
聽fine:聽private聽struct聽def.
聽聽聽friend聽DirverInit;聽聽
//
聽fine:聽friend聽dec.
public
:
聽聽聽
int
聽
static
聽round(
double
聽d);聽聽
//
聽fine:static聽member聽function聽dec.
聽聽聽
void
聽setSize(
int
聽size);聽
//
聽fine:聽member聽function聽dec.
聽聽聽
int
聽cmp(
const
聽Driver
&
)聽
const
;聽
//
聽fine:聽const聽member聽function聽dec.
}
;聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽
//
聽fine:聽class聽def.
static
聽
class
聽DriverInit聽
{
聽聽
//
聽
}
聽DriverInit;聽聽聽
//
聽Special聽class
int
聽min(
int
聽x,聽
int
聽y);聽聽
//
聽Avoid:聽free聽function聽dec.
inline聽
int
聽max(
int
聽x,聽
int
聽y)
{
聽聽聽
return
聽x聽
>
聽y聽
?
聽x聽:聽y;
inline聽
void
聽Driver::setSize(
int
聽size)聽
{
聽聽聽d_size聽
=
聽size;
}
聽聽聽聽
//
聽fine:聽inline聽member聽function聽def.
ostream
&
聽
operator
聽
<<
(ostream
&
聽o,聽
const
聽Dirver
&
聽d);聽聽
//
聽fine:聽free聽operator聽function聽def.
inline聽
int
聽
operator
聽
==
(
const
聽Driver
&
聽lhs,聽
const
聽Dirver
&
聽rhs)聽
{
聽聽聽
return
聽compare(lhs,聽rhs)聽
==
聽
0
;
}
聽聽聽聽
//
聽fine:聽free聽inline聽operator聽func.聽def.
inline聽
int
聽Driver::round(
double
聽d)
{
聽聽聽retrun聽d聽
<
聽
0
聽
?
聽
-
int
(
0.5
聽
-
聽d)聽:聽
int
(
0.5
聽
+
聽d);
}
聽聽聽聽
//
聽fine:聽inline聽static聽member聽func.聽def.
#endif
void
聽Complex_Add(
const
聽Complex
&
聽__tempResult,聽
const
聽Complex
&
聽c1,聽
const
聽Complex
&
聽c2)
{
聽聽聽
struct
聽Complex聽retVal;
聽聽聽retVal.Complex::Complex();聽
//
聽Constructor聽retval
聽聽聽retVal.real聽
=
聽a.real聽
+
聽b.real;
聽聽聽retVal.imag聽
=
聽a.imag聽
+
聽b.imag;
聽聽聽__tempResult.Complex::Complex(retVal);聽
//
聽copy-constructor
聽聽retVal.Complex::
~
Complex();聽
//
聽destroy聽retVal
聽聽
return
;
}
void
聽Complex_Add(
const
聽Complex
&
聽__tempResult,聽
const
聽Complex
&
聽c1,聽
const
聽Complex
&
聽c2)
{
聽聽聽__tempResult.Complex::Complex();聽聽
//
聽construcotr聽__tempResult
聽聽聽__tempResult.real聽
=
聽a.real聽
+
聽b.real;
聽聽聽__tempResult.imag聽
=
聽a.imag聽
+
聽b.imag;
聽聽聽
return
;
}
int
聽main()
{
聽聽聽Complex聽a(
1
,
0
);
聽聽聽Complex聽b(
2
,
0
);
聽聽聽Complex聽c;
聽聽聽
//
聽begin聽timing聽here
聽聽聽
for
聽(
int
聽i聽
=
聽
1000000
;聽i聽
>
聽
0
;聽
--
i)聽
{
聽聽聽聽聽聽c聽
=
聽a聽
+
聽b;
聽聽聽}
聽聽聽
//
聽stoping聽timing聽here
}
Complex聽operator聽+(const聽Complex&聽a,聽const聽Complex&聽b)
{
聽聽聽//聽operator聽+聽version聽1
聽聽聽Complex聽retVal;
聽聽聽retVal.real聽=聽a.real聽+聽b.real;
聽聽聽retVal.imag聽=聽a.imag聽+聽b.imag;
聽聽聽return聽retVal;
}
Complex聽operator聽+(const聽Complex&聽a,聽const聽Complex&聽b)
{
聽聽聽//聽operator聽+聽version聽2
聽聽聽double聽r聽=聽a.real聽+聽b.real;
聽聽聽double聽i聽=聽a.imag聽+聽b.imag;
聽聽聽return聽Complex(r,聽i);
}
聽聽聽
Complex聽operator聽+(const聽Complex&聽a,聽const聽Complex&聽b)
{
聽聽聽//聽operator聽+聽version聽3
聽聽聽Complex聽retVal(a.real聽+聽b.real,聽a.imag聽+聽b.imag);
聽聽聽return聽retVal;
}
and
Complex聽operator聽+(const聽Complex&聽a,聽const聽Complex&聽b)
{
聽聽聽//聽operator聽+聽version聽4
聽聽聽return聽Complex(a.real聽+聽b.real,聽a.imag聽+聽b.imag);
}
class
聽Complex
{
聽聽聽
//
聽Complex聽addition聽operator
聽聽聽
friend聽Complex聽
operator
聽
+
(
const
聽Complex
&
,聽
const
聽Complex
&
);
public
:
聽聽聽
//
聽default聽constructor
聽聽聽
//
聽Value聽defaults聽to聽0聽unless聽otherwise聽specified
聽聽聽
Complex(
double
聽r聽
=
聽
0.0
,聽
double
聽i聽
=
聽
0.0
):real(r),聽imag(i)聽
{聽}
聽聽聽
//
聽copy聽constructor
聽聽聽
Complex(
const
聽Complex
&
聽c):real(c.real),聽imag(c.imag)聽
{聽}
聽聽聽
//
聽Assignment聽operator
聽聽聽
Complex
&
聽
operator
聽
=
(
const
聽Complex
&
聽c);
聽聽聽
~
Complex()聽
{聽}
private
:
聽聽聽
double
聽real;
}
;
Complex聽
operator
聽
+
(
const
聽Complex
&
聽a,聽
const
聽Complex
&
聽b)
{
聽聽聽聽Complex聽retVal;
聽聽聽聽retVal.real聽
=
聽a.real聽
+
聽b.real;
聽聽聽聽retVal.imag聽
=
聽a.imag聽
+
聽b.imag;
聽聽聽聽
return
聽retVal;
}
Complex
&
聽Complex::
operator
聽
+
(
const
聽Complex
&
聽c1,聽
const
聽Complex
&
聽c2)
{
聽聽
}
void
聽Complex_Add(
const
聽Complex
&
聽__result,聽
const
聽Complex
&
聽c1,聽
const
聽Complex
&
聽c2)
{
聽聽聽
}
struct
聽Complex聽__tempResult;聽
//
聽Storage.聽No聽constructor聽here.
Complex_Add(__tempResult,聽c1,聽c2);聽
//
聽All聽argument聽passed聽by聽reference.
c3聽
=
聽__tempResult;聽
//
聽Feed聽result聽back聽into聽left-hand-side.
class
聽Locker
{
public
:
聽聽聽聽Locker()聽
{聽}
聽聽聽聽
virtual
聽
~
Locker()聽
{聽}
聽聽聽聽
virtual
聽
void
聽
lock
()聽
=
聽
0
;
聽聽聽聽
virtual
聽
void
聽unlock()聽
=
聽
0
;
}
;
class
聽CriticalSectionLock聽:聽
public
聽Locker
{聽
}
;
class
聽MutexLock聽:聽
public
聽Locker
{
聽
}
;
template聽<class聽LOCKER>
class聽ThreadSafeString聽:聽public聽string
{
public:
聽聽聽ThreadSafeString(const聽char*聽s)聽
聽聽聽:聽string(s)聽{聽}
聽聽聽
聽聽聽int聽length();
private:
聽聽聽LOCKER聽lock;
};
template聽<class聽LOCKER>
inline
int聽ThreadSafeString<LOCKER>聽::聽length()

{
聽聽lock.lock();
聽聽int聽len聽=聽string::length();
聽聽lock.unlock();
聽聽return聽len;
}
vector
<
int
>
聽v;
v.reserve(
2
);
assert(v.capacity()聽
==
聽
2
);
v[
0
]聽
=
聽
1
;
v[
1
]聽
=
聽
2
;
for
聽(vector
<
int
>
::iterator聽i聽
=
聽v.begin();聽
聽聽聽聽聽聽聽i聽
<
聽v.end();聽i
++
)聽
{
聽聽聽聽cout聽
<<
聽
*
i聽
<<
聽endl;
}
cout聽
<<
聽v[
0
];
v.reserve(
100
);
assert(v.capacity()聽
==
聽
100
);
cout聽
<<
聽v[
0
];
v[
2
]聽
=
聽聽
3
;
v[
3
]聽
=
聽
4
;
//
聽...
v[
99
]聽
=
聽
100
;
for
聽(vector
<
int
>
::iterator聽i聽
=
聽v.begin();
聽聽聽聽聽聽聽i聽
<
聽v.end();聽i
++
)聽
{
聽聽聽聽cout聽
<<
聽
*
i聽
<<
聽endl;
}
vector
<
int
>
聽v;
v.reserve(
2
);
assert(v.capacity()聽
==
聽
2
);
v[
0
]聽
=
聽
1
;
v[
1
]聽
=
聽
2
;
for
聽(vector
<
int
>
::iterator聽i聽
=
聽v.begin();聽
聽聽聽聽聽聽聽i聽
<
聽v.end();聽i
++
)聽
{
聽聽聽聽cout聽
<<
聽
*
i聽
<<
聽endl;
}
浠ヤ笂浠g爜鏈夎濡備互涓嬬殑寤鴻錛?br />1> 灝介噺浣跨敤const.鏈慨鏀箆涓殑鍐呭錛屽彲浣跨敤const_iterator;
2> 灝介噺浣跨敤!=鑰屼笉鐢?lt;鏉ユ瘮杈冭凱浠e櫒銆?!= 瀵逛換浣曡凱浠e櫒閮芥湁鏁堬紝鑰?lt; 鍙闅忔満璁塊棶榪唬鍣ㄦ湁鏁堛俵ist涓嶆敮鎸?lt;;
3> 灝介噺浣跨敤++鍓嶇紑錛岃岄潪鍚庣紑銆傚彲浠ヤ粠++鍓嶅悗緙鐨勫疄鐜頒唬鐮佷腑寰楃煡錛岄櫎闈炰竴浜涚壒孌婂満鍚堬紱
4> 閬垮厤鏃犺皳鐨勯噸澶嶆眰鍊箋倂.end()鍑芥暟鍦ㄩ噸澶嶆眰鍊鹼紝鑰屾暣涓驚鐜湡闂撮兘鏈敼鍙樸傞櫎闈瀍nd()琚紪璇戝櫒榪涜鍐呰仈錛屾棤璋冪敤寮閿錛屾渶濂芥槸灝嗗叾鎻愬埌寰幆澶栭潰錛?br />5> 灝介噺浣跨敤'\n'鑰岄潪endl銆傚師鍥犲湪浜巈ndl浼?xì)杩娇杈撳嚭娴佸堜h柊鍏跺唴閮ㄧ紦鍐插尯錛屽彲浠ュ湪鏁翠釜寰幆涔嬪悗鍐欎竴涓埛鏂拌鍙ャ?br />6> 灝介噺浣跨敤鏍囧噯搴撲腑綆楁硶. 濡俢opy()銆乫or_each()銆備緥濡傝繖閲屽氨鍙互榪欐牱鍐欙細(xì)
copy(v.begin(), v.end(), ostream_iterator<int>(cout, '\n'));
榪欐牱涓鏉ヤ篃閬垮厤浜?>聽~ 5鐨勯夯鐑︺?br />
// zero
[Andrew Koeing & Barbara MOO] Accelerated C++
Accelerated c++, Andrew Koeing & Barbara MOO, Addison Wesley, 2000
Desc:聽榪欐湰涔︾浉褰撲笉閿欙紝璁茶В鐨凜++緙栫▼鐨勫疄璺典笢瑗褲備篃鐩稿綋閫傚悎棰勫琺鍥篊++璇硶鐭ヨ瘑鐨勪漢闃呰銆?br />
[Eckel2000] Thinking in C++
Thinking in C++ 2/e Bruce Eckel 2000 1470 pages Prentice Hall
C++ 緙栫▼鎬濇兂錛屽垬瀹楃敯絳?璇戯紝420欏?
[Lippman98] C++Primer
C++ Primer,3rd Editoin,by Stanley Lippman and Josee Lajoie
Addison Wesley Longman,1998 1237 pages
C++ Primer 涓枃鐗堬紝渚繆鏉?璇戯紝1999錛?237欏?
[Struostrup2000] The C++ Programming Language
The C++ Programming Language,Special Editoin,by Bjarne Stroustrup
Addison Wesley Longman,2000,1017 pages
[ANSI C++] C++瑙勬牸涔?1998.9.1 PDF鏍煎紡
ANSI C++ 1996 Draft
灞傜駭浜岋細(xì)涓撳緇忛獙(C++/OOP)
[Meyers96] More Effective C++
More Effective C++, by Scott Meyers,Addison Wesley,1996,318pages
More Effective C++涓枃鐗堬紝渚繆鏉幫紝鍩圭敓 2000. 318欏?
[Meyers98] Effective C++
Effective C++, Second Edition,by Scott Meyers,Addison Wesley Longman,1998.256pages
Effective C++ 2/e 涓枃鐗?渚繆鏉?鍩圭敓 2000.256欏?br />Effective C++, Third Edition, by Scott Meyers, Addison Wesley Longman.
[Sutter99] Exceptional C++
Exceptional C++錛宐y Herb Sutter,Addison Wesley Longman,2000.208pages
Exceptional C++涓枃鐗堬紝渚繆鏉?鍩圭敓 2000.248欏?
[Sutter2001]More Exceptional C++
More Exceptional C++ by Herb Sutter, Addison Wesley Longman, 2001.
[Sutter2004]Exception C++ Style
Exception C++ Style by Herb Sutter, Addison Wesley Longman, 2004.
灞傜駭涓夛細(xì)搴曞眰鏈哄埗(C++ Object Model)
[Ellis90] The Annotated C++ Reference Manual
The Annotated C++ Reference Manual,by Margaret A.Ellis and Bjarne Stroustrup
Addison Wesley Longman,1990,447 pages.
[Lippman96] Inside the C++ Object Model
Inside the C++ Object Model,by Stanley Lippman,Addison Wesley Longman,1996,280pages
娣卞害鎺㈢儲C++鐗╀歡妯″瀷錛屼警淇婃澃 璇?
灞傜駭鍥涳細(xì)璁捐瑙傚康鐨勫鐢?C++/Patterns)
[Gamma95] Design Patterns錛欵lements of Reusable Object Oriented Software,
by Erich Gamma,Richard Helm,Ralph Johnson,and John Vlissides,Addison Wesley,1995.395pages
璁捐妯″紡,鏉庤嫳鍐涚瓑璇?鏈烘宸ヤ笟鍑虹増紺?2000.254欏?
[Alex2001]Modern C++ Design: Generic Programming and Design Patterns Applied
by Andrei Alexandrescu,Addison-Wesley,2001,352Paper
Genericity/STL緋誨垪(涓庡眰綰т簩鍚屾錛?
絎竴涓鐣屾槸浣跨敤STL:
[Josuttis99]:The C++ Standard Library 錛岮 Tutorial and Reference,by Nicolai M.Josuttis,
Addison Wesley 1999.799pages
絎簩涓鐣屾槸浜嗚В娉涘瀷鎶鏈殑鍐呮兜涓嶴TL鐨勫鐞?
[Austern98]:Generic Programming and the STL -Using and Extending the C++ Standard
Template library,by Matthew H.Austern,Addison Wesley 1998.548page
絎笁涓鐣屾槸鎵╁厖STL:
[Stepanov2001]:C++ Standard Template Library by P.J.Plauger,Alexander A.Stepanov,
Meng Lee,David R.Musser,Prentice Hall 2001
鍏朵粬涔︾洰錛?br />1. Large-scale C++ software Design, John Lako, Addison Wesley, 1996
2. Effective STL, Scott Meyers, Addison Wesley, 1995
3. C++ FAQs, 2nd, Marshall Cline, Greg Lomow, Mike Girou, Addison Wesley, 1998
4. C++ Gotchas, Stephen Dewhurst, Addison Wesley, 2002
5. C++ templates, the complete Guide, Daveed Vandevoorde & Nicolar M.Josuttis, Addison Wesley, 2002
6. Standard C++ iostreams and Locals, Angelika Langer & Klaus Kreft, Addison Wesley, 2000
7. Design & Evolution of C++, BS, Addison Wesley, 1994
8. Modern C++ Design, Andrie Alexandrescu, Addison Wesley, 2001
9. Generative Programming, Krzysztof Czarnecki & Ulrich Eisencecker, Addison Wesley, 2000
10.Pattern-oriented software architecture, Vol1:A system of patterns, Frank Buschmann, 1996
11. STL 婧愮爜鍓栨瀽錛屼警鏉?br />12. C++ Coding Standards 101 Rules Guidelines, Andrie Alexandrescu & Herb Sutter, Addison Wesley, 2005