Question

#include<iostream.h> this header file is not sported to a c++ programing

Answer 1

The file's name is not iostream.h but just iostream.

So the include looks like this correctly:

#include <iostream>

Comments

I TYPE ONLY IOSTREAM BUT DIDNT WORK SOME ERRER ARE THERE

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PLZ SOLUCTION THIS HEADER FILE INPUT C++ ONE PROGRAM NOT A RUN

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You must be doing something wrong.

Can you save your project (4th button to the right of RUN) and share a link so we can see what's going on?

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Do you have c++ compiler installed ??

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https://onlinegdb.com/heLbPOlV1

plz seen that this program not run to a c++ on gdb and i request to soluction is very soon.

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First of all, you're trying to run it as a Turbo C++ project. Why not use the standard C++ instead? (C++ or C++20)

There are many problems with your code (after setting the target to be C++20):

1. conio.h is an MS-DOS library, not available on Linux (including OnlineGDB).
2. Extra closing brace at the end of the file.
3. You need to remove the conio.h related functions (clrscr and getch). They are there just for "formatting", no real functionality.
4. count is unknown as the fully qualified name is std::cout, so the compiler wouldn't find it. So either fully qualify the name or tell the compiler to try to append the namespace std in front of functions (using namespace std;)

Your code as modified below would run fine:

#include <iostream>

using namespace std;

class abc
{
    protected:
    void func()
    {
        cout<<"protected...";
    }
};

class xyz : protected abc
{
    public:
    void show()
    {
        func();
    }
};

int main()
{
    xyz obj;
    obj.show();
}