/* Functions        */
/* No semantic Errors  */

void bar(int x);

void bar(int x) {  
   return;         
}

int foo(int x, boolean y) {
   int z;
   return x  + z; 
}

int f(int x, boolean y) {
   if (y) 
      return x;
   else
      return 2*x;
}

void main() {
  int x;
  boolean y;

  x = f(3,true); 
  bar(x); 
  x = f(f(4, true), false);
}