Write a program that declares an arbitrary function in a header file.
The header file is called myheader.
h Define this function inside the main program source file called source.cpp.
The main function is also located inside a source.cpp file.
Include the header into our source file and invoke the function.
myheader.h:
void myfunction(); //function declaration
source.cpp:
#include "myheader.h" //include the header #include <iostream> int main() { myfunction(); } // function definition void myfunction() { std::cout << "Hello World from multiple files."; }