Write One Full Program with Function to Implement: Following in c++abs(x): return always be positive Function (fnabs1) Absolute1 using by Val method Function (fnabs2) Absolute2 using by Ref method...

Write One Full Program with Function to Implement : Following in c++ abs(x): return always be positive Function (fnabs1) Absolute1 using by Val method Function (fnabs2) Absolute2 using by Ref method - :(Procedure (main user will enter number x in run-time mode call (fnabs 1) for x and store in r1 call (fnabs2) for x and store in r2 compare r1 and r2 to see the result same or not user will in loop until he enter (0) and program terminate immediately