change.txt

类型转化包括16进制字符串转化ASCII码,2位16进制字符串转化10进制等

/////////16进制字符串转化ASCII码
CString HextoDec(CString string2)                   
{
    CString chekstr,string16,p;
    int aa,bb,cc,i,str16len,n,m=0;
    char   a[2];
    string16=string2;
    str16len=string16.GetLength();
    for(i=0;i<str16len-1;i=i+2)
    {
	m=0;n=0;
        p=string16.Mid(i,2);
	strcpy(a,LPCTSTR(p)); 
	if(a[0]>='0'&&a[0]<='9') 
           n=n*16+a[0]-'0'; 
        if(a[0]>='a'&&a[0]<='f') 
           n=n*16+a[0]-'a'+10; 
        if(a[0]>='A'&&a[0]<='F') 
           n=n*16+a[0]-'A'+10;
	aa = n*16;
	if(a[1]>='0'&&a[1]<='9') 
           m=m*16+a[1]-'0'; 
        if(a[1]>='a'&&a[1]<='f') 
           m=m*16+a[1]-'a'+10; 
        if(a[1]>='A'&&a[1]<='F') 
           m=m*16+a[1]-'A'+10;
	bb = m;
	cc = aa+bb;
        chekstr+=(char)cc;
    }
    return chekstr;
}

/////2位16进制字符串转化10进制
int deal16to10(CString string16)                               
{
    int n=0,m=0,aa,bb,cc;
    char   a[2];
    CString pstr;
    pstr=string16;
    strcpy(a,LPCTSTR(pstr));
    if(a[0]>='0'&&a[0]<='9') 
       n=n*16+a[0]-'0'; 
    if(a[0]>='a'&&a[0]<='f') 
       n=n*16+a[0]-'a'+10; 
    if(a[0]>='A'&&a[0]<='F') 
       n=n*16+a[0]-'A'+10;
    aa = n*16;
    if(a[1]>='0'&&a[1]<='9') 
       m=m*16+a[1]-'0'; 
    if(a[1]>='a'&&a[1]<='f') 
       m=m*16+a[1]-'a'+10; 
    if(a[1]>='A'&&a[1]<='F') 
       m=m*16+a[1]-'A'+10;
    bb = m;
    cc = aa+bb;
    return cc;
}

//////16进制字符串转化成10进制后计算校验位返回
CString strauto10(CString str16)                         
{
    CString chekstr,string16,p;
    int aa,bb,cc,dd=0,i,str16len,n,m=0;
    char   a[2];
    string16=str16;
    str16len=str16.GetLength();
    for(i=0;i<str16len-1;i=i+2)
    {
	m=0;n=0;
        p=string16.Mid(i,2);
	strcpy(a,LPCTSTR(p));	//char *ip = const_cast<char *>((LPCSTR)string16.Mid(i,1));
                               //char* pC = (char*)(LPCTSTR)string16.Mid(i,1); 
	if(a[0]>='0'&&a[0]<='9') 
           n=n*16+a[0]-'0'; 
        if(a[0]>='a'&&a[0]<='f') 
           n=n*16+a[0]-'a'+10; 
        if(a[0]>='A'&&a[0]<='F') 
           n=n*16+a[0]-'A'+10;
	aa = n*16;
	if(a[1]>='0'&&a[1]<='9') 
           m=m*16+a[1]-'0'; 
        if(a[1]>='a'&&a[1]<='f') 
           m=m*16+a[1]-'a'+10; 
        if(a[1]>='A'&&a[1]<='F') 
           m=m*16+a[1]-'A'+10;
	bb = m;
	cc = aa+bb;
        dd +=cc;
    }
    CString strstr,renstr;
    strstr.Format(_T("%x"), dd);
    int endint;
    endint=strstr.GetLength();
    renstr=strstr.Mid(endint-2,2);
    return  renstr;
}