如何将unsigned char *字符串转成16进制并存入unsigned char *中

[linuxlan]

最近在研究进制转换！但是一直没有思路怎么写字符串转16进制的程序！

unsigned char * 中的数据转成16进制数据并存入 unsigned char *中

[linwendong1982]

55和48是什么含义

[Allen_zhang]

给你一个工具函数
byte和十六进制的互换，一个编码一个解码

bool DeCombinByte(const byte *byIn, const int iSrcLen, char *szOut)
{
	char *szTmp = NULL;
	try
	{
		szTmp = new char[iSrcLen*2];
		int k = 0;
		for (int j = 0; j < iSrcLen; j++)
		{
			szTmp[k] = byIn[j] >> 4;
			szTmp[k+1] = byIn[j] & 0x0F;
			k += 2;
		}
		for (int i = 0; i < iSrcLen*2; i++)
		{
			if(szTmp[i] > 9)
				szOut[i] = szTmp[i] + 55;
			else
				szOut[i] = szTmp[i] + 48;
		}
		delete[] szTmp;
		return true;
	}
	catch(...)
	{
		ERRORMSG("DeCombinByte Exception");
		if(NULL !=szTmp)
			delete szTmp;
		return false;
	}
}

bool CombinByte(const char *szIn, BYTE *byOut, const int iilen = -1)
{
	char *szTmp = NULL;
	try
	{
		int iSrcLen = iilen;
		if(iilen < 0)
		iSrcLen = strlen(szIn);
		szTmp = new char[iSrcLen];
		for (int i = 0; i < iSrcLen; i++)
		{
			if (szIn[i] >= 65)
				szTmp[i] = szIn[i] - 55;
			else
				szTmp[i] = szIn[i] - 48; 
		}
		int k = 0;
		for (int j = 0; j < iSrcLen / 2; j++)
		{
			byOut[j] = (BYTE)((szTmp[k] << 4) | (szTmp[k+1]));
			k += 2;
		}
		delete[] szTmp;
		return true;
	}
	catch(...)
	{
		ERRORMSG("CombinByte Exception");
		if(NULL !=szTmp)
			delete szTmp;
		return false;
	}
}

[jyh_baoding]

楼上实现的很好

[hongguang1978]

谢谢,学习一下！

[frtmpnn]

ding
studying

[wangmanapple]

没有直接转化的函数吗