字符串16进制转10进制

发布: 2007-7-01 20:40 | 作者: admin | 来源: | 查看: 915次 | 进入软件测试论坛讨论

主要代码如下：

#include

int strHexToInt(char* strSource)
{
int nTemp=0;

CString strTemp;
strTemp=strSource;
for(char cc=@#G@#,dd=@#g@#;   cc<=@#Z@#,dd<=@#z@#; cc++,dd++)    //判断输入的字符串是否合法
{
  if(strTemp.Find(cc,0) !=-1 || strTemp.Find(dd,0) !=-1)
  {
   ::MessageBox(NULL,"请输入正确的16进制字符串!","输入错误",MB_ICONEXCLAMATION);
   return -1;
  }
}

for(int i = 0; i<(int)::strlen(strSource); i++)
{
  int nDecNum;
  switch(strSource[i])
  {
   case @#a@#:
   case @#A@#: nDecNum = 10; break;
   case @#b@#:
   case @#B@#: nDecNum = 11; break;
   case @#c@#:
   case @#C@#:   nDecNum = 12;   break;
   case @#d@#:
   case @#D@#:   nDecNum = 13;   break;
   case @#e@#:
   case @#E@#:   nDecNum = 14;   break;
   case @#f@#:
   case @#F@#:   nDecNum = 15;   break;
   case @#0@#:
   case @#1@#:
   case @#2@#:
   case @#3@#:
   case @#4@#:
   case @#5@#:
   case @#6@#:
   case @#7@#:
   case @#8@#:
   case @#9@#:    nDecNum = strSource[i] - @#0@#;     break;
   default:     return 0;
        }
     nTemp += nDecNum * (int)::pow(16,::strlen(strSource)-i -1);
}
return nTemp;
}

void CDDlg::OnConvert()
{
UpdateData();

if(strHexToInt((LPSTR)(LPCTSTR)m_str) !=-1)
{
  CString str;
  str.Format("%d",strHexToInt((LPSTR)(LPCTSTR)m_str));
  SetDlgItemText(IDC_STATE,str);
}
m_edit.SetWindowText("");
m_edit.SetFocus();
}

程序运行截图：