Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

SQLite3µÄC±à³Ì

/*=================================
.*  The Standard include file.
.*
.*===============================*/
#include <stdio.h>
#include <stdlib.h>
/*=================================
.*
.*  The extend include file.
.*
.*===============================*/
#include "sqlite3.h"
/* #include "sqlite3ext.h"  */
int main()
{
     /* Connect SQLite system. */
     sqlite3 *pDatabase = NULL;
     int result;
     char sql[500];
     char *err_msg = NULL;
     int i;
     result = sqlite3_open("test.db3", &pDatabase);
     if( result != SQLITE_OK ) {
          printf("Failure to open the database.\n");
          return -1;
     } else
          printf("Good to open the database.\n");
     sprintf(sql,"BEGIN");
     sqlite3_exec(pDatabase, sql,0,0,err_msg);
     sprintf(sql, "CREATE TABLE [TestDB] (\
                   [id] int, [name] varchar(20), [age] int)");
     /*
     if (SQLITE_OK != sqlite3_exec(pDatabase, sql, 0, 0, &err_msg)) {
          printf("operate failed: %s.\n", err_msg);
          return -1;
     }*/
     for(i = 0; i < 10000; i++) {
          sprintf(sql, "INSERT INTO [TestDB] ([id], [name], [age]) \
                    


Ïà¹ØÎĵµ£º

C/C++ÖпÕÖ¸ÕëÓë0ÓëNULLºÍÆäËûÈô¸ÉÎÊÌâС½á

ʲôÊÇ¿ÕÖ¸Õë³£Á¿£¨null pointer constant£©?
[6.3.2.3-3] An integer constant expression with the value 0, or such an expression cast to type void *, is called a null pointer constant.
ÕâÀï¸æËßÎÒÃÇ£º0¡¢0L¡¢'\0'¡¢3 - 3¡¢0 * 17 £¨ËüÃǶ¼ÊÇ“integer constant expression”£©ÒÔ¼° (void*)0 µÈ¶¼ÊÇ¿Õ ......

c°æµÄ»Øµ÷º¯ÊýÓëc++°æµÄÐ麯Êý

CÓïÑԵĻص÷º¯Êý˼Ïë´úÂ룺
#include <stdio.h>
void *max(void *base, unsigned int nmemb, unsigned int size,
    int (*compar)(const void *, const void *))
{
    int i;
    void* max_data = base;
    char* tmp = base;
 &nbs ......

Ñ¡ÔñÅÅÐòÓëðÅÝ·¨ÅÅÐòµÄC´úÂëʵÏÖ

Ñ¡ÔñÅÅÐò·¨ÀàËÆÎÒÃÇÈËΪµÄÅÅÐòϰ¹ß£º´ÓÊý¾ÝÖÐÑ¡Ôñ×îСµÄͬµÚÒ»¸öÖµ½»»»£¬ÔÚ´ÓʡϵIJ¿·ÖÖÐÑ¡Ôñ×îСµÄÓëµÚ¶þ¸ö½»»»£¬ÕâÑùÍù¸´ÏÂÈ¥……
Ñ¡ÔñÅÅÐòµÄƽ¾ùʱ¼ä¸´ÔӶȱÈðÅÝÅÅÐòµÄÉÔµÍ:
ͬÑùÊý¾ÝµÄÇé¿öÏ£¬2ÖÖËã·¨µÄÑ­»·´ÎÊýÊÇÒ»ÑùµÄ£¬µ«Ñ¡ÔñÅÅÐòÊÇÒ»¶Ô¶àµÄ±È½Ï£¬Ã¿ÌËÖ»½øÐÐ0µ½1´Î½»»»£¬¶øÃ°ÅÝÅÅÐòÊÇÏàÁÚÁ½Á½±È½Ï£ ......

Cº¯Êýµ÷ÓÃÔ¼¶¨

CÖвÉÓÃÁ˲»Í¬µÄµ÷Ó÷½Ê½À´µ÷Óú¯Êý£¬ÕâÀïµÄº¯Êýµ÷ÓøÅÄî¿ÉÄÜÓëÎÒÃÇͨ³£ËùÀí½âµÄº¯Êýµ÷ÓÃÓÐËù²»Í¬£¬ËüÃÇÖ¸µÄÊÇ´¦ÀíÆ÷ÔÚ´¦Àíº¯ÊýÉϵIJîÒì¡£Àí½âÕâЩ²»Í¬µÄ·½Ê½ÓÐÖúÓÚÎÒÃÇÀ´µ÷ÊÔ³ÌÐòºÍÁ´½ÓÎÒÃǵĴúÂë¡£ÔÚ´ËÎÒÏëÌÖÂÛÒ»ÏÂÖ÷ÒªµÄËÄÖÖº¯Êýµ÷Ó÷½·¨ÒÔ¼°Ö®¼äµÄÇø±ð£¬ËüÃÇÊÇ__stdcall¡¢__cdecl¡¢__fastcall¡¢thiscall¡£µ±È»£¬»¹ÓÐһР......

ÂÛC/SÓëB/S

½ñÌì×ßÉÏ·ÉÏͻȻÓижø·¢£¬ÎÒÃÇÀÏʦһֱ¸øÎÒÃǽ²Òª´ÓC/SתÏòB/S£¬µ«ÊÇÎÒ¾õµÃʲôÊÇC/S£¬Ê²Ã´ÊÇB/S£¿Æäʵ¶¼Êǿͻ§»ú·þÎñÆ÷ģʽ°É£¡ÒÔǰ¸ù±¾Ã»ÓÐB/SµÄ¸ÅÄ¶øÈç½ñÕâ¸öB/SµÄ¸ÅÄîÔõô±äµÃÈç´ËµÄ¿äÕÅ£¬ä¯ÀÀÆ÷Ã÷Ã÷¾ÍÊÇÒ»¸ö¿Í»§¶ËÈí¼þ£¬Ö»ÊǰÑÄÇЩ¹æ·¶ºÃµÄÎı¾Òë³É¸÷ÖÖ¸÷ÑùµÄ¸ñʽ£¬Ö»ÊÇ´ó¼Ò¶¼×ñÑ­ÁËÕâÑùµÄÒ»¸ö¹æ¶¨¾Í±ä³ÉÁËÁíÒ»ÖÖ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ