Preprocessor directives always begin with the "hash" symbol $(\backslash$#$)$ and are used to process your source code before it is sent to the compiler. Use preprocessor directives to complete the following program. The discord$()$ function is declared in the file funcs.h$.$

$```$

include.cpp

#include $//$ For cout, endl

#include $//$ For ostringstream

#include $//$ For fixed, setprecision

#include

int main$()$

$\{$

ostringstream out;

out $$ "According to Douglas Adams, the answer to everything is $42"$ endl;

out $$ "Other observers, however, believe that the real answer is: $"$;

out $$ fixed $$ setprecision$(5)$ sqrt$($discord$(42))$ endl;

string result $=$ out.str$()$;

cout $$ result;

$\}$

$```$