19. Consider the following C program: int fun (int *i) { return 4. void main) f int x = 3 ; x = x + fun ( & x ) ; Implement the code in C/C++. During your testing modify the function call in main so that it also calls the function first (i.e. x- fun(&x) + x;). Document your findings. a) b) Implement the code in Pascal.During your testing modify the function call in main so that it also calls the function first (ie. x = fun(&x)-x). Document your findings