十六进制字符串转十进制

来源：互联网发布：windows ppt下载编辑：程序博客网时间：2024/05/17 03:15

#include <iostream>
#include <windows.h>
using namespace std;

//十六进制字符串转换成十进制整数
int StringToInt(CHAR *szSource)
{
   int iBuffer[64] ={0};
    int i = 0;
    int nLen = strlen(szSource);
    int iNumber = 0;
   int k = 0;
    for( i=nLen-1;i>=0;i--)
    {
       int iResult = 1;
       for(int j=1;j<= i;j++)
       {
           iResult =iResult*16;
       }
       switch(szSource[k++])
       {
       case '0':
           iBuffer[i] = 0*iResult;
           break;
       case '1':
           iBuffer[i] = 1*iResult;
           break;
       case '2':
           iBuffer[i] = 2*iResult;
           break;
       case '3':
           iBuffer[i] = 3*iResult;
           break;
       case '4':
           iBuffer[i] = 4*iResult;
           break;
       case '5':
           iBuffer[i] = 5*iResult;
           break;
       case '6':
           iBuffer[i] = 6*iResult;
           break;
       case '7':
           iBuffer[i] = 7*iResult;
           break;
       case '8':
           iBuffer[i] = 8*iResult;
           break;
       case '9':
           iBuffer[i] = 9*iResult;
           break;
       case 'A':
           iBuffer[i] = 10*iResult;
           break;
       case 'B':
           iBuffer[i] = 11*iResult;
           break;
       case 'C':
           iBuffer[i] = 12*iResult;
           break;
       case 'D':
           iBuffer[i] = 13*iResult;
           break;
       case 'E':
           iBuffer[i] = 14*iResult;
           break;
       case 'F':
           iBuffer[i] = 15*iResult;
           break;
       case 'a':
           iBuffer[i] = 10*iResult;
           break;
       case 'b':
           iBuffer[i] = 11*iResult;
           break;
       case 'c':
           iBuffer[i] = 12*iResult;
           break;

       case 'd':
           iBuffer[i] = 13*iResult;
           break;
       case 'e':
           iBuffer[i] = 14*iResult;
           break;
       case 'f':
           iBuffer[i] = 15*iResult;
           break;
       }
       iNumber += iBuffer[i];
   }
   return iNumber;

}

int main()
{
   char * str = "";
    cout << StringToInt("aa") << endl;
   return 0;
}

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