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1.¶¯Ì¬»ñµÃÄÚ´æµÄ´úÂë:
void GetMemory(char **p, int num)
{
  *p = (char *)malloc(sizeof(char) * num);
}
char* GetMemory2(int num)
{
  char* p = (char *)malloc(sizeof(char) * num);
  return p;
}
------------------------------------------
´íÎóµÄ´úÂë:
void GetMemory3(char *p, int num)
{
  p = (char *)malloc(sizeof(char) * num);
}///////////////´íÎóÔÚÄÄÀï,ÎҾͲ»Ëµ,×Ô¼ºÈ¥²é.
2.strcpy()µÄ´úÂë:
char* strcpy(char* strDest,const char* strSrc)
{
    if(strDest==NULL || strSrc==NULL)      return NULL;
    char* pStr=strDest;
    while((*strDest++=*strSrc++)!='\0)
          NULL;
    return pStr; 
}
3.memcpy()µÄ´úÂë:
void* memcpy(char* strDest,const char* strSrc,size_t size)
{
    if(strDest==NULL||strSrc==NULL) return NULL;
    if(size <=0) return NULL;   
    char* pStr=strDest;
    while(size-->0)
        *strDest++=*strSrc++;
    return pStr;   
}
4.¹ØÓÚsizeof²Ù×÷·û:
char                                1
short                               2
short    int                       2
signed short                    2
unsigned short                2
int                                   4
long   


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VB/C++/C#´®¿ÚͨѶԴ´úÂ롾¸½ÏêϸעÊÍ¡¿


VB
    If MSComm1.PortOpen = True Then MSComm1.PortOpen = False
    MSComm1.CommPort = i1
    MSComm1.PortOpen = True
    MSComm1.InputMode = comInputModeBinary
    MSComm1.InBufferCount = 0
& ......

C++ÖÐʹÓÃsqlite

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include ".\sqlite3_lib\sqlite3.h"
 
static int _callback_exec(void * notused,int argc, char ** argv, char ** aszColName)
{
    int i;
    for ( i=0; i<argc; i++ )
   ......

C/C++ÊÇ×îÖ÷ÒªµÄ±à³ÌÓïÑÔ,ÕâÀïÁгöÁË50ÃûÓÅÐãÍøÕ¾

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1¡¢http://snippets.dzone.com/tag/c/ --ÊýÒÔǧ ......

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1£¬Èç¹ûº¯ÊýfuncÊÇ__cdecl(VCϵÄĬÈϵ÷Ó÷½Ê½)£¬µ÷ÓÃʱÇé¿öÈçÏÂ
int main()
{
//²ÎÊý´ÓÓÒµ½×óѹջ
push 4
push 3
push 2
push 1
call func
add esp 0x10 //µ÷ÓÃÕ߻ָ´¶ÑÕ»Ö¸Õëesp£¬4¸ö²ÎÊýµÄ´óСÊÇ0x10(4x4)
}
Cµ÷ÓÃÔ¼¶¨£¨¼´ÓÃ__cdecl¹Ø¼ü×Ö˵Ã÷£©°´´ÓÓÒÖÁ×óµÄ˳Ðòѹ² ......
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