Thread: Need some help with C++ object oriented programing

k so heres my problem im writing a program that has a class called String and this will take a string and remove the null charicter and it will have a varible for the length of the string.

im using Dev C++ as a compiler, yeah probly not the best but its free.

the errors im getting are when i start to overload ostream.
heres what the compiler says:

11 main.cpp In file included from main.cpp
121 My_String.h ISO C++ forbids declaration of `ostream' with no type
121 My_String.h `ostream' is neither function nor member function;
cannot be declared friend
121 My_String.h expected `;' before '&' token
125 My_String.h ISO C++ forbids declaration of `istream' with no type
125 My_String.h `istream' is neither function nor member function;
cannot be declared friend
125 My_String.h expected `;' before '&' token
G:\CISP 430\Project2\Makefile.win [Build Error] [main.o] Error 1

and now the main part of the code
first the .h file

Code:

class String
{
    
    char* STR; //string
    unsigned Len; // length of string
    
public
    friend ostream& operator<< (ostream& , const String&);

    friend istream& operator>> (istream& , const String&);

now the .cpp file

Code:

ostream& operator<<(ostream& Os, const String& s)
{
    for(unsigned I=0; I < s.Len;I++)
    {
        Os<<s[I];
    }
    return (Os);
}

istream& operator>>(istream& Is, const String& s )
{
    String Temp;
    char cc;
    while (is.get(cc))
    {
        if (cc=='\n')
        {
            break;
        }
    }
    Temp +=cc;
    s = Temp;
    return Is;
}