一个小问题,请各们大侠帮忙?

PBYTE pBuff;
  char  szFileName[] = "1234567890";  pBuff = (PBYTE)LocalAlloc (LPTR, 14);
pBuff[0] = char(0x01);
pBuff[1] = char(0x30);
pBuff[2] = char(0x00);
pBuff[3] = char(0x10);
         strcat((char *)pBuff, szFileName);结果是: ASCII码 pBuff[0] = 1;
               pBuff[1] = 0x30;
但是           pBuff[2] = 50;即是1的ASCII码.
               pBuff[3] = 51;即是2的ASCII码.
也就是说：strcat之后覆盖了两个字符！
请问是什么原因？