c/c++ ¾²Ì¬±äÁ¿ Ò»¸öʵÀý
#include <iostream>
#include <cstdlib>
using namespace std;
class Foo
{
public:
Foo(int ii):i(ii){}
int getInt(){return i;}
private:
int i;
};
class Bar
{
public:
static int FooVal(){c++; return f.getInt();}
int callsFooVal(){return c;}
private:
static int c;
static Foo f;
};
int Bar::c=0;
Foo Bar::f(9);
int main()
{
Bar b;
cout<<Bar::FooVal()<<endl;
cout<<b.callsFooVal()<<endl;
cout<<Bar::FooVal()<<endl;
cout<<b.callsFooVal()<<endl;
cout<<Bar::FooVal()<<endl;
cout<<b.callsFooVal()<<endl;
system("PAUSE");
return 0;
}
Ïà¹ØÎĵµ£º
ÎÊÌâÃèÊö£ºÐ´Ò»¸öº¯Êý£¬½ÓÊÜÒ»¸öÕûÊý£¨¼Ù¶¨ÓÃint±íʾ£©£¬Êä³ö¸ÃÕûÊýµÄ×Ö·û´®ÐÎʽ¡£²ÉÓÃÈçϺ¯ÊýÔÐÍ£º
void itoa ( int val, buf* );
ÕâÀï¼Ù¶¨buf×ã¹»´óÒÔÈÝÄÉÈκÎintÀàÐÍÊýÖµµÄ×Ö·û´®¡£
Õâ¸öÎÊÌ⣬³õ¿´ºÃÏñûÓÐʲôÄѶȡ£Èç¹ûÊÇ0£¬¾ÍÖ±½ÓÊä³ö'0'£»Èç¹ûÊÇÕýÊý£¬¾Íͨ¹ýȡģ(%)ºÍÇóÉÌ(/)ÔËËã¿ÉÒÔÖðλȡµÃ¸ÃÕûÊýµÄÊý×Ö£¬²¢° ......
µÚ7Õ ÄÚ´æ¹ÜÀí
»¶Ó½øÈëÄÚ´æÕâÆ¬À×Çø¡£Î°´óµÄBill Gates Ôø¾Ê§ÑÔ£º
640K ought to be enough for everybody
— Bill Gates 1981
³ÌÐòÔ±ÃǾ³£±àдÄÚ´æ¹ÜÀí³ÌÐò£¬ÍùÍùÌáÐĵõµ¨¡£Èç¹û²»Ïë´¥À×£¬Î¨Ò»µÄ½â¾ö°ì·¨¾ÍÊÇ·¢ÏÖËùÓÐDZ·üµÄµØÀײ¢ÇÒÅųýËüÃÇ£¬¶ãÊǶ㲻Á˵ġ£±¾ÕµÄÄÚÈݱÈÒ»°ã½Ì¿ÆÊéµÄÒªÉîÈëµÃ¶à£¬¶ÁÕßÐèϸР......
¼øÓÚÔÚÓÃCÓïÑÔдһЩ×Ö·û´®´¦ÀíµÄ³ÌÐòʱÖÖÖֵIJ»±ã,±¾È˼áÐÅ"Ä¥µ¶²»Îó¿³²ñ¹¦"Õâ¸öÐÅÌõ,ÓÚÊÇÔÚרÃÅ
½øÐÐÁËÒ»´ÎÄ¥¶ÔCÓïÑÔµÄÄ¥µ¶,дÁËһЩ×Ö·û´®µÄ´¦Àíº¯Êý, ·½±ãÍøÓÑʹÓÃ, ´ó¼ÒÓкõĽâ¾ö·½·¨Ò²Çë¸æÖªÒ»ÏÂ.
¡¡¡¡¡¡¡¡ÎÒ¹À¼ÆÓÐһЩCµÄ¿âÖп϶¨ÓбÈÎÒÕâ¸üºÃµÄº¯Êý, µ«ÊDZ¾ÈËûÓÐÕÒµ½, Íû"ÐмÒ"¸æÖª.
#include <string.h> ......
ÖÜÎ忪»á×öÍŶӳÉÔ±codereivew£¬ ÓÐͬÊÂÌá³öÁËÒ»¸ö¹ØÓÚgmtime¶àÏß³ÌÊÇ·ñ°²È«µÄÎÊÌ⣬ µ±Ê±¾õµÃ³ÌÐòLinkÁËVCµÄ¶àÏ߳̿⣬Ӧ¸Ã²»ÊÇÎÊÌâ¡£»¹ºÃ»ØÍ·ºËʵÁËһϣ¬·¢ÏÖÁ˾¹ÊÇÒ»¸öDZÔÚµÄbug¡£
³ÌÐò·ÖÔÚapplication£¨Íê³ÉÏîÄ¿ÌØ¶¨¹¦ÄÜ£©ºÍframework£¨¿ÉÖØÓõĺËÐŦÄÜ£©Á½²¿·Ö£¬Ïß³ÌµÄÆô¶¯ÓÉframeworkÍê³É¡£ appÖÐʹÓÃÁËgmtime/loc ......
1.ÄÚ´æ·ÖÅ䷽ʽ
¡¡¡¡ÄÚ´æ·ÖÅ䷽ʽÓÐÈýÖÖ£º
¡¡¡¡[1]´Ó¾²Ì¬´æ´¢ÇøÓò·ÖÅä¡£ÄÚ´æÔÚ³ÌÐò±àÒëµÄʱºò¾ÍÒѾ·ÖÅäºÃ£¬Õâ¿éÄÚ´æÔÚ³ÌÐòµÄÕû¸öÔËÐÐÆÚ¼ä¶¼´æÔÚ¡£ÀýÈçÈ«¾Ö±äÁ¿£¬static±äÁ¿¡£
¡¡¡¡[2]ÔÚÕ»ÉÏ´´½¨¡£ÔÚÖ´Ðк¯Êýʱ£¬º¯ÊýÄÚ¾Ö²¿±äÁ¿µÄ´æ´¢µ¥Ôª¶¼¿ÉÒÔÔÚÕ»ÉÏ´´½¨£¬º¯ÊýÖ´ÐнáÊøÊ±ÕâЩ´æ´¢µ¥Ôª×Ô¶¯±»ÊÍ·Å¡£Õ»ÄÚ´æ·ÖÅäÔËËãÄÚÖÃÓÚ ......