There is a 'getch' in 'conio.h' which has nothing to do with 'iostream'.
Java does not require header files like C/C++.
The <iostream> include file is a header file that contains the prototype declarations of functions that provide the basic input/output mechanisms in C++. The <iostream> header file sets up the objects that initialize the basic input/output pathways, cout and cin.
iostream.h is deprecated and should not be used. It was originally shipped with early versions of C++ which used CFront to produce C compatible code from C++ source. Later, when C++ was standardised, iostream.h became iostream (without the .h extension), but many implementers shipped with both versions. However, iostream.h is not standards compliant and should not be used today. In most cases the file can simply be deleted unless you have non-compliant legacy code that requires it.
No. You can't use namespace std even if you include stdio.h. At the very least you must include stddef.h before you can use namespace std.
Yes,we can compile our program without header file without any error,but we can not use any predefine functions like printf,scanf.
Java does not require header files like C/C++.
The <iostream> include file is a header file that contains the prototype declarations of functions that provide the basic input/output mechanisms in C++. The <iostream> header file sets up the objects that initialize the basic input/output pathways, cout and cin.
No explicit limit, you can use so many header files as you want.
Yes.
it is sqrt in header math.h
Header files are used to have declarations. It is simple to include a single header file than writing all the needed functions prototypes.
You need to #include the header file that contains the missing function's declaration.
iostream.h is deprecated and should not be used. It was originally shipped with early versions of C++ which used CFront to produce C compatible code from C++ source. Later, when C++ was standardised, iostream.h became iostream (without the .h extension), but many implementers shipped with both versions. However, iostream.h is not standards compliant and should not be used today. In most cases the file can simply be deleted unless you have non-compliant legacy code that requires it.
pata nhn
Yes (but usually it is a bad idea).
The source file must include the header file. Beyond that we can only guess at the problem without seeing the content of the source and header files. Do not post the files here. Such questions are better handled by the many C programming forums available elsewhere on the Internet.
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