/*
 * func.c
 */

int foo(int bar);           /* function prototype */

int main(int argc, char *argv[])
{
    int x, y, z;

    x = 10;
    y = foo(x);
    z = foo(y);
    z = z * 2;

    return z;
}

int foo(int bar)
{
    int baz;

    baz = bar * 9;

    return baz;
}