It's in conio.h, but don't use gotoxy. Use SetCursorPosition() instead.
Standard C does not provide such a function; it does not even require you to have an internet connection.
conio.h
stdio.h
The std::pow() function can be found in the <cmath> header.
string.h
No. Header files are those which contains declaration part of function & library files are those which contains definition part of function. These are those functions which we called in our program by using header files.
There is no such function as gotoxy(). It was originally a standard function in conio.h, used to set the console cursor position, but it was deprecated because it was non-portable. While it may still exist in older C compilers, its usage would be frowned upon today and no known C or C++ compiler should support such a function these days. You are free to "roll your own" version of the function, of course. The following version works on Windows only. But given how little it actually adds to what already exists, and its non-portable nature it hardly seems worthwhile. #include <stdio.h> #include <conio.h> #include <windows.h> // Standard version: void gotoxy( COORD c ) { SetConsoleCursorPosition( GetStdHandle( STD_OUTPUT_HANDLE ), c ); } // Overloaded version emulating original gotoxy function: void gotoxy( int x, int y ) {COORD c;c.X = x;c.Y = y; gotoxy( c ); // call standard version }
You define the function at the same time you declare it, usually in the header file, sometimes in an .hpp file.
You need to #include the header file that contains the missing function's declaration.
#include<stdio.h> Another answer: Nothing.
Header files are not much different from usual cpp files. There are basically two different things. It's file extension: you need to choose "header file" when you create it or save as .h file. Second is header files do not have main() function. When you are done with you header file do not forger to include it in your project by writing preprocessor directive:#include "your_header_file.h"
It contains useful function-prototypes.