VC进制转换(二进制-十进制-十六进制)

由于工作中经常要用到进制转换，于是写了几个函数：
//10->2
 CString DecimalToBin(int iDecimal)

 {

char c[20];

_itoa(iDecimal, c, 2 );

CString  str(c);

return str;

 }

 //10->16

 CString DecimalToHex(int iDecimal)

 {

char c[20];

sprintf(c, "%x", iDecimal);// _ltoa( l, buffer, 16 );

CString  str(c);

return str;

 }

 //16->10

 int HexToDecimal(CString strHex)

 {

ULONG lValue;//4 BYTE

sscanf(strHex,"%X",&lValue);

return lValue;

 }

 //16->2

 CString HexToBinary(CString strHex)

 {

ULONG lValue;//4 BYTE

sscanf(strHex,"%X",&lValue);

char c[20];

_itoa(lValue, c, 2 );

CString  str(c);

return str;

 }

 //2->10

 UINT BinaryToDec(CString strBin)

 {

//
 assert(strHex.GetLength<=8);

char *stopstring;

const char *cBin = (LPSTR)(LPCTSTR)strBin;

UINT iValue; 

iValue =strtol(cBin, &stopstring, 2);

return iValue;

 }

 //2->16

 CString BinaryToHex(CString strBin)

 {

char *stopstring;

const char *cBin = (LPSTR)(LPCTSTR)strBin;

UINT iValue; 

iValue =strtol(cBin, &stopstring, 2);

char c[20];

sprintf(c, "%x", iValue);

CString  str(c);

return str;

}
可以按照自己的需求修改，没考虑周到，比如16->10函数只能转换4个字节。