LPTSTR lpString1,
LPCTSTR lpString2,//鎸囧悜涓涓互NULL緇撴潫鐨勫瓧絎︿覆
int iMaxLength //浠巐pString2鎷瘋礉鍒發(fā)pString1鐨勫瓧絎︿覆涓暟錛屽寘鎷琋ULL瀛楃
);
鎴愬姛榪斿洖鎸囧悜lpString1鐨勬寚閽堬紝鍚﹀垯榪斿洖NULL銆?br />
濡傛灉lpString2鐨勯暱搴﹀ぇ浜巌MaxLength錛岃鏂規(guī)硶瀹為檯涓婃槸灝唋pString2涓殑鍓?/span>iMaxLength-1涓瓧絎?/span>鍜?span style="color: #ff0000">涓涓狽ULL瀛楃鎷瘋礉鍒發(fā)pString1涓?br />濡傛灉璇ユ柟娉曟垚鍔燂紝鍒檒pString1涓瀹氭槸浠ULL緇撴潫鐨勫瓧絎︿覆銆?br />
2._tcsncpy鏄竴涓畯錛岃冭檻鍦╱nicode鐨勬儏鍐典笅
define _tcsncpy wcsncpy
wchar_t *wcsncpy(
wchar_t *strDest,
const wchar_t *strSource,
size_t count
);
Parameters
Return Value
Returns strDest. No return value is reserved to indicate an error.
涓嶈兘淇濊瘉NULL緇撴潫錛屽皢count涓瓧絎︽嫹璐濆埌strDest涓?/p>
]]>
{
static char buf[20];
strcpy(buf, msg[idx]);
return buf;
}
int main()
{
char *day0 = get_a_day(0);
char *day1 = get_a_day(1);
printf("%s %s\n", day0, day1);
return 0;
}
緇撴灉鏄粈涔堬紵
]]>
{
long x:2;
long y:4;
long data;
}data_item,*pdata_item; 涓婅堪鏄竴涓仈鍚堜綋錛岃仈鍚堜綋鐨勫璞＄敤鐨勭┖闂存槸綾誨瀷涓崰鐢ㄥ唴瀛樻渶澶х殑鍝釜錛屼緥濡備笂渚嬩腑data_item鍙橀噺鍗犵敤4涓瓧鑺傘?br>long x:2;
琛ㄧずx鍗犵敤2bit
long y:4;
琛ㄧずy鍗犵敤4bit
long data;
data鍗犵敤4byte
鎵浠ヤ笂榪皍nion鍗犵敤4byte絀洪棿銆?br>long s=sizeof(data_item);
s=4;
鍥犱負(fù)x,y,data鍏敤鍐呭瓨絀洪棿銆?br>浠庝綆浣嶅紑濮嬶紝鍗?br>x鍗犵敤絀洪棿鐨勪綆2bit錛屽嵆0-1
y鍗犵敤絀洪棿2~5bit
x,y閮芥槸鍙互鏄湁絎﹀彿鐨勶紝鐩稿鏈楂樹綅琛ㄧず絎﹀彿浣嶃?br>渚嬪錛?br>item_data t={0};
(1) t.data = 2;
2琛ㄧず鎴愪簩榪涘埗浣?0.
鎵浠.x 鐨勫間負(fù)-2;
(2) t.data = 3;
3琛ㄧず鎴愪簩榪涘埗浣?1
鎵浠.x鐨勫間負(fù)-1
(3) t.data =1;
姝ゆ椂t.x鐨勫間負(fù)1
t.y鐨勫彇鍊肩殑閬撶悊鍚宼.x;
瀵逛簬t.y鏉ヨ絎?浣嶈〃紺烘璐熷彿銆?br>
]]>
class Node
{
public:
Node(void){}~Node(void){}virtual bool IsLeafNode()=0;
};class InternalNode:public Node{public:InternalNode(){}virtual ~InternalNode(void){}virtual bool IsLeafNode(){return false;}};class LeafNode:public Node{public:LeafNode(){}virtual ~LeafNode(){}virtual bool IsLeafNode(){return true;}};鏈変竴涓櫄鏂規(guī)硶IsLeaf鏉ュ垽鏂槸鍚︿負(fù)鍙跺瓙鑺傜偣銆?br>涓嬮潰鏈夎繖鏍風(fēng)殑嫻嬭瘯浠ｇ爜錛?br>test()
{
Node *node = new InternalNode();
memset(node,0,sizeof(InternalNode));
node->IsLeafNode();
}
涓婅堪浠ｇ爜緙栬瘧姝ｅ父錛岃岃繍琛屾椂鍑洪敊錛?br>鍑虹幇涓婅堪闂鐨勫師鍥犳槸錛?br>瀵逛簬鏈夎櫄鍑芥暟鐨勭被錛屾瘡涓涓被鏈変竴涓櫄鍑芥暟琛紝鑰屾瘡涓涓璞′腑浼?xì)鏈変竴涓寚閽堟寚鍚戣繖涓櫄鍑芥暟琛ㄣ?br>褰?nbsp; Node *node = new InternalNode();鏃剁紪璇戝櫒浼?xì)鎶婁竴涓寚閽堢煡閬揑nternalNode鐨勮櫄鍑芥暟琛?br>浣嗘槸memset(node,0,sizeof(InternalNode));鍗存妸榪欎釜鎸囬拡璁炬垚浜?jiǎn)銆?br>鎵浠ュ湪璋冪敤鐨勬椂鍊欏嚭鐜頒簡(jiǎn)榪愯鏃墮敊璇紒
]]>
{
public:
//...
void moveTo(Point newLocation);
bool validate()const;
vritual bool draw() const=0;
//...
}:
class Circle: public Shape
{
//...
bool draw() const;
//...
};
void (Shape::*mf1)(Point ) = &Shape::moveTo;//鎸囧悜綾葷殑鎴愬憳鍑芥暟鐨勬寚閽堛?br>
ReturnType (ClassName::*pFuncName)(paramList);
pFuncName瀹氫箟浜?jiǎn)鎸囧悜ClassName涓殑涓緇勫嚱鏁般傝繖緇勫嚱鏁扮殑褰㈠紡鏄繑鍥炲間負(fù)ReturnType錛屽嚱鏁板垪琛ㄤ負(fù)paramList.
ClassName鐨勯檺瀹氫嬌寰楀彧鏈塁lassName鎴栨淳鐢熻嚜瀹冪殑綾葷殑瀵硅薄鎵嶈兘瑙ｅ紩鐢ㄨ繖涓嚱鏁版寚閽堛?br>
1 #include"stdafx.h"
2 #include<stdio.h>
3 #include<stdlib.h>
4
5 class Base;
6 class Derived;
7 typedef long (Base::*PFunc)(long,long);
8
9 enum FuncType
10 {
11 ADD=1,
12 SUB,
13 DIV,
14 MUL,
15 };
16
17 typedef struct tagCallBackFunc
18 {
19 long funcType;
20 PFunc proc;
21 }COMMAND,*PCOMMAND;
22
23 class Base
24 {
25 public:
26
27 virtual PCOMMAND GetCommands(void);
28 static COMMAND command[];
29
30 long base_add(long a,long b){printf("in base_add()\n");return a+b;}
31 long base_sub(long a,long b){printf("in base_sub()\n");return a-b;}
32 long base_div(long a,long b){printf("in base_div()\n");return a/b;}
33 long base_mul(long a,long b){printf("in base_mul()\n");return a*b;}
34 };
35
36 COMMAND Base::command[]={
37 {ADD,(PFunc)&Base::base_add},
38 {SUB,(PFunc)&Base::base_sub},
39 {MUL,(PFunc)&Base::base_mul},
40 {DIV,(PFunc)&Base::base_div},
41 };
42 PCOMMAND Base::GetCommands()
43 {
44 return command;
45 }
46
47 class Derived:public Base
48 {
49 public:
50 Derived(void){}
51 ~Derived(void){}
52 virtual PCOMMAND GetCommands(void){return command;}
53
54 long add(long a,long b){printf("in add()\n");return a+b;}
55 long sub(long a,long b){printf("in sub()\n");return a-b;}
56 long div(long a,long b){printf("in div()\n");return a/b;}
57 long mul(long a,long b){printf("in mul()\n");return a*b;}
58
59 static COMMAND command[];
60 };
61
62 COMMAND Derived::command[]=
63 {
64 {ADD,(PFunc)&Derived::add},
65 {SUB,(PFunc)&Derived::sub},
66 {MUL,(PFunc)&Derived::mul},
67 {DIV,(PFunc)&Derived::div},
68 {0}
69 };
70
71
72
73 void test(Base *control,FuncType funcType,long operand1,long operand2)
74 {
75 PCOMMAND pCommand = control->GetCommands();
76 PCOMMAND pNowCommand=NULL;
77
78 for(long i=0;pCommand[i].funcType;++i)
79 {
80 if(funcType == pCommand[i].funcType)
81 {
82 pNowCommand = &pCommand[i];
83 break;
84 }
85 }
86
87 if(pNowCommand)
88 {
89 long res = (control->*pNowCommand->proc)(operand1,operand2);
90 printf("res=%d\n",res);
91 }
92 }
93
94 int main()
95 {
96 Derived *d =new Derived();
97 Base *b = (Base*)d;
98 test(b,ADD,1,2);
99
100 Base *bb = new Base;
101 test(bb,MUL,1,2);
102 delete bb;
103 delete d;
104 return 0;
105 }
2 #include<stdio.h>
3 #include<stdlib.h>
4
5 class Base;
6 class Derived;
7 typedef long (Base::*PFunc)(long,long);
8
9 enum FuncType
10 {
11 ADD=1,
12 SUB,
13 DIV,
14 MUL,
15 };
16
17 typedef struct tagCallBackFunc
18 {
19 long funcType;
20 PFunc proc;
21 }COMMAND,*PCOMMAND;
22
23 class Base
24 {
25 public:
26
27 virtual PCOMMAND GetCommands(void);
28 static COMMAND command[];
29
30 long base_add(long a,long b){printf("in base_add()\n");return a+b;}
31 long base_sub(long a,long b){printf("in base_sub()\n");return a-b;}
32 long base_div(long a,long b){printf("in base_div()\n");return a/b;}
33 long base_mul(long a,long b){printf("in base_mul()\n");return a*b;}
34 };
35
36 COMMAND Base::command[]={
37 {ADD,(PFunc)&Base::base_add},
38 {SUB,(PFunc)&Base::base_sub},
39 {MUL,(PFunc)&Base::base_mul},
40 {DIV,(PFunc)&Base::base_div},
41 };
42 PCOMMAND Base::GetCommands()
43 {
44 return command;
45 }
46
47 class Derived:public Base
48 {
49 public:
50 Derived(void){}
51 ~Derived(void){}
52 virtual PCOMMAND GetCommands(void){return command;}
53
54 long add(long a,long b){printf("in add()\n");return a+b;}
55 long sub(long a,long b){printf("in sub()\n");return a-b;}
56 long div(long a,long b){printf("in div()\n");return a/b;}
57 long mul(long a,long b){printf("in mul()\n");return a*b;}
58
59 static COMMAND command[];
60 };
61
62 COMMAND Derived::command[]=
63 {
64 {ADD,(PFunc)&Derived::add},
65 {SUB,(PFunc)&Derived::sub},
66 {MUL,(PFunc)&Derived::mul},
67 {DIV,(PFunc)&Derived::div},
68 {0}
69 };
70
71
72
73 void test(Base *control,FuncType funcType,long operand1,long operand2)
74 {
75 PCOMMAND pCommand = control->GetCommands();
76 PCOMMAND pNowCommand=NULL;
77
78 for(long i=0;pCommand[i].funcType;++i)
79 {
80 if(funcType == pCommand[i].funcType)
81 {
82 pNowCommand = &pCommand[i];
83 break;
84 }
85 }
86
87 if(pNowCommand)
88 {
89 long res = (control->*pNowCommand->proc)(operand1,operand2);
90 printf("res=%d\n",res);
91 }
92 }
93
94 int main()
95 {
96 Derived *d =new Derived();
97 Base *b = (Base*)d;
98 test(b,ADD,1,2);
99
100 Base *bb = new Base;
101 test(bb,MUL,1,2);
102 delete bb;
103 delete d;
104 return 0;
105 }
絎?9琛屾槸瀵規(guī)寚鍚戠被鎴愬憳鍑芥暟鐨勬寚閽堢殑瑙ｆ瀽銆?
]]>
鏄竴縐嶅乏瀛╁瓙銆佹湁鍏勫紵鐨勮〃紺恒?br>姣忎竴涓妭鐐瑰寘鍚笅鍒楀睘鎬э細(xì)
1.鎸囧悜鐖惰妭鐐圭殑鎸囬拡
2.left-child[x]鎸囧悜鑺傜偣x鐨勬渶宸﹀瀛?br>3.right-sibling[x]鎸囧悜鑺傜偣x绱у彸杈圭殑鍏勫紵銆?br>
]]>