如何使二进制变十六进制

string BinToHex(const string &strBin)
{
string strHex;
strHex.resize(strBin.size() * 2);
for (size_t i = 0; i < strBin.size(); i++)
{
uint8_t cTemp = strBin[i];
for (size_t j = 0; j < 2; j++)
{
uint8_t cCur = (cTemp & 0x0f);
if (cCur < 10)
{
cCur += '0';
}
else
{
cCur += 'A' - 10);
}
strHex[2 * i + 1 - j] = cCur;
cTemp >>= 4;
}
}

 return strHex;

}