經常使用的代碼:
void PrintBuffer(void* pBuff, unsigned int nLen)
{
if (NULL == pBuff || 0 == nLen)
{
return;
}
const int nBytePerLine = 16;
unsigned char* p = (unsigned char*)pBuff;
char szHex[3*nBytePerLine+1] = {0};
unsigned int i;
printf("-----------------begin-------------------\n");
for (i=0; i<nLen; ++i)
{
int idx = 3 * (i % nBytePerLine);
if (0 == idx)
{
memset(szHex, 0, sizeof(szHex));
}
#ifdef WIN32
sprintf_s(&szHex[idx], 4, "%02x ", p[i]);// buff長度要多傳入1個字節
#else
snprintf(&szHex[idx], 4, "%02x ", p[i]); // buff長度要多傳入1個字節
#endif
// 以16個字節爲一行,進行打印
if (0 == ((i+1) % nBytePerLine))
{
printf("%s\n", szHex);
}
}
// 打印最後一行未滿16個字節的內容
if (0 != (nLen % nBytePerLine))
{
printf("%s\n", szHex);
}
printf("------------------end-------------------\n");
}