class BasicString public BasicString BasicString char BasicString char

class BasicString {
    public:
    BasicString();
    BasicString(char);
    BasicString(char *);
    BasicString(const BasicString&);
    ~BasicString();
    int length();
    void clear();
    friend ostream& operator<<(ostream&, BasicString&);
    friend istream& operator>>(istream&, BasicString&);

    protected:
        char *_data;
        int _length;
};

/home/flint/code/l2k/basic_string.h|15|error: ISO C++ forbids declaration of ‘ostream’ with no type|
/home/flint/code/l2k/basic_string.h|15|error: expected ‘;’ before ‘&’ token|
/home/flint/code/l2k/basic_string.h|16|error: ISO C++ forbids declaration of ‘istream’ with no type|
/home/flint/code/l2k/basic_string.h|16|error: ‘istream’ is neither function nor member function; cannot be declared friend|
/home/flint/code/l2k/basic_string.h|16|error: expected ‘;’ before ‘&’ token|
/home/flint/code/l2k/basic_string.cpp|46|error: expected constructor, destructor, or type conversion before ‘&’ token|
/home/flint/code/l2k/basic_string.cpp|52|error: expected constructor, destructor, or type conversion before ‘&’ token|
/home/flint/code/l2k/basic_string.cpp||In constructor ‘Complex::Complex()’:|
/home/flint/code/l2k/basic_string.cpp|60|error: invalid use of ‘class BasicString’|
||=== Build finished: 8 errors, 0 warnings ===|