char *的十六进制字符串转化成long

十六进制的string转换成long

long m_nFun(int m, int n){if(n == 0) return 1;if(n == 1) return m;return m * m_nFun(m, n-1);}long stringToLong(char *str){long i=0;long Num=0;long temp=0;int len=strlen(str);for (i=len-1;i>0;i--){if (str[i]>='0'&&str[i]<='9'){temp=str[i]-48;}else if (str[i]>='a'&&str[i]<='f'){temp=str[i]-97+10;}else if (str[i]>='A'&&str[i]<='F'){temp=str[i]-65+10;}Num+=m_nFun(16,len-1-i)*temp;}return Num;}