Question

I just switched to C++ from C#
I wrote a link list code in C++ ran it in win32 console application and getting very strange errors while build

I pointed out 3 errors in comments , rest I cant type ,its too much .

using namespace std;

class float_list
{
     struct node
    {
        double data;
        struct node *next;
     };
        node *head;
public:

    float_list(void)
    {
        head = nullptr;
    };

    void appendNode(double);

};
//void float_list::appendNode(float num)
//{
//      
//}
void float_list::appendNode(double num)
    {
        node *newNode; 
        node *ptr; //here i am getting this Error error C3872:
                       //'0xa0': this character is not allowed in an identifier  , 
                       // how ever I changed its name again and again.  

        newNode = new node;
        newNode->data = num; // here un declared identifier ,
                         //also missing ; before this line 
        newNode->next = nullptr;


    if (!head)
    {       
        head = newNode;
    }
    else 
    {       
                ptr = head;     

                while (ptr->next)
                {
                ptr = ptr->next;
                ptr->next = newNode;
                };
        }
    }

Answer 1

The problem probably isn’t the identifier, but the white space
around it. 0xA0 is the Latin-1 code for a non-breaking
space. It’s not a legal character in input, and for some reason, the
compiler is treating it as part of the identifier. If nothing else works, delete the line and reenter it, making sure that all spaces are normal spaces. (I’m not sure under Windows, but I think a control-space or a shift-space will enter the nonbreaking space.)