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scanf¶ÔÁ÷µÄ²Ù×÷×ñ´ÓÀàÐÍÆ¥Åä²Ù×÷Ô­Ôò£¬Èç¹ûÀàÐͲ»Æ¥Å䣬Ëü½«²»¶ÁÈ¡ÊäÈëÁ÷¡£ Òò´ËÊäÈëÁ÷½«ÖÍÁô£¬Èç¹ûÊäÈëÁ÷²»¿Õ£¬scanf²»»áµÈ´ýÓû§ÊäÈë,Ö±½Ó´Ó»º³åÇøÖÐÊäÈë.
µ«ÊÇ,scanf() ÔõÑùÆ¥Åä? stdinÓÖÊÇʲô?
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Àý: scanf("%d,%d",&i,&j);  ÊäÈë:12 ,13»Ø³µ µ«ÊÇ,j!=13. //×¢Òâ,12ºóÓÐÒ»¸ö¿Õ¸ñ,why?  
    Ô­Òò:ÎÒ½âÊÍΪ,ÔÚscanf()ÖÐ,¸ñʽ×Ö·û´®ÖÐÆÕͨ×Ö·û(²»°üÀ¨¿Õ°××Ö·û)ʵÐеÄÊÇ ÑϸñÆ¥Åä,ÒòΪ¸ñʽ´®ÖÐ%dºóÃæÊÇÒ»¸ö ','  ,Òò´ËÊäÈëÖÐÊý×Ö12ºó±ØÐëΪһ¸ö','.
      scanf("1123%s",&str);  ÊäÈë:1123aaabb ʱstrΪ aaabb,µ«ÊÇ,ÊäÈë 24aabbddʱ,   »á³ö´í,ÒòΪ1123±ØÐë½øÐÐÑϸñÆ¥Åä.
ÁíÍâ:  scanf("%d\n",&i); printf("i=%d",i);      ÒªÔõôÊäÈë²ÅÄÜÊä³ö: i=12    ? Ëü²»ÊÇÄãÏëÏñÖеÄÄÇÑù,Óлú»á³¢ÊÔһϰÉ!
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scanf()ÊÇÒ»¸öÓзµ»ØÖµ µÄº¯Êý,ËüµÄ·µ»ØÖµÊÇʲô?ÔõôÑùÀûÓÃÕâ¸öÌØÐÔ?
scanf()ÖÐµÄÆ¥ÅäÔ­Ôò: ÔÚ±¾ÎÄ µÚÎåµã ¾ßÌå˵Ã÷...
scanf()Öи÷ÖÖÊý¾Ý¸ñʽƥÅäµÄ¿ªÊ¼Ìõ¼þ,½áÊøÌõ¼þ .
         Èç: %d ,\nµÈÀàÐÍÊäÈë½áÊøÌõ¼þ.
          scanf("%d\n",&i);printf("%d",i);  ÊäÈë 12»Ø³µ,²¢ÎÞÊä³ö,why?
scanf()º¯ÊýµÄ½áÊøÌõ¼þ: µ±¸÷¸ö ¸ñʽ·û Æ¥ÅäÍê±Ï,ÇÒ×îºóÓÐÒ»¸ö»Ø³µÊ±,º¯Êý½áÊø.
scanf("%s",str)Á¬ÐøÊäÈë127¸ö¾Í²»ÄܼÌÐøÊäÈëÁË.  //TCÖÐ,VCºÃÏñÊÇ4000¶à..
//˵Ã÷¼üÅÌ»º³åÇø³¤¶ÈΪһ¸ö×Ö½ÚÂð?µ«ÊÇ  stdin->bsize(»º³åÇø´óС)ÊÂʵÉÏΪ 512,ÕâÓÖÊÇΪʲ


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Linux»·¾³ÏÂÓÃcÓïÑÔдµÄ²¥·ÅwavÎļþµÄС³ÌÐò

#include <unistd.h>
#include <fcntl.h>
#include
<sys/types.h>
#include <sys/ioctl.h>
#include
<stdlib.h>
#include <stdio.h>
#include
<linux/soundcard.h>
/* ÏÂÃæµÄÈý¸ö²ÎÊýÊǸú¾ßÌåÎļþÏà¹ØµÄ£¬ÎļþʲôÑù£¬¾ÍÒªÉèÖóÉʲôÑù */
#define RATE 11025&nbs ......

ʹÓÃc#´´½¨sql serverµÄ´æ´¢¹ý³Ì_c#Ó¦ÓÃ2

{
SqlConnection cnn = new SqlConnection
("context connection=true");
cnn.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = cnn;
cmd.CommandText = "select * from customers";
SqlDataReader reader = cmd.ExecuteReader();
SqlContext.Pipe.Send(reader);
reader.Close();
cnn.Close();
}
......

[C/C++ Digestion] – Rule of Three, ¸´ÖÆ¿ØÖÆ


[C/C++ Digestion] – Rule of Three,
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Jason Lee @
http://blog.csdn.net/jasonblog
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2010-04-13
 
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copy constructor
Rule of Three
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