to printHi()
   {
   // print hi here somehow...
   }

printHi();

int i, string s, float x;

int a;
a = 1 + 2 + 3 + 4 + 5;

tree of int t;

to square(float a) into float result
   {
   result = a*a;
   }

to freen(int x) into (float square, int mod4, int mod5)
    {
    square = x*x;
    mod4 = x&3;
    mod5 = x%5;
    }

float b = square(a);