二进制值和十六进制字符串相互转换的C++代码

时间:2023-03-09 08:28:56
二进制值和十六进制字符串相互转换的C++代码
 #include <iostream>
#include <string>
#include <stdint.h> using namespace std; string BinToHex(const string &strBin, bool bIsUpper = false)
{
string strHex;
strHex.resize(strBin.size() * );
for (size_t i = ; i < strBin.size(); i++)
{
uint8_t cTemp = strBin[i];
for (size_t j = ; j < ; j++)
{
uint8_t cCur = (cTemp & 0x0f);
if (cCur < )
{
cCur += '';
}
else
{
cCur += ((bIsUpper ? 'A' : 'a') - );
}
strHex[ * i + - j] = cCur;
cTemp >>= ;
}
} return strHex;
} string HexToBin(const string &strHex)
{
if (strHex.size() % != )
{
return "";
} string strBin;
strBin.resize(strHex.size() / );
for (size_t i = ; i < strBin.size(); i++)
{
uint8_t cTemp = ;
for (size_t j = ; j < ; j++)
{
char cCur = strHex[ * i + j];
if (cCur >= '' && cCur <= '')
{
cTemp = (cTemp << ) + (cCur - '');
}
else if (cCur >= 'a' && cCur <= 'f')
{
cTemp = (cTemp << ) + (cCur - 'a' + );
}
else if (cCur >= 'A' && cCur <= 'F')
{
cTemp = (cTemp << ) + (cCur - 'A' + );
}
else
{
return "";
}
}
strBin[i] = cTemp;
} return strBin;
} int main()
{
string strBin = "!@#$%^&*()_+~`1234567890-=";
string strHex = "21402324255E262A28295F2B7E60313233343536373839302D3D"; string strBinToHex = BinToHex(strBin);
cout << strBinToHex << endl;
strBinToHex = BinToHex(strBin, true);
cout << strBinToHex << endl; string strHexToBin = HexToBin(strHex);
cout << strHexToBin << endl; return ;
}