void foo(int a)
{
    char ch;

    ch = cast(char)a;
    ch = cast(char)45;
    ch = (char)a; // not a d cast
    ch = (int) 45;
    ch = cast(foo)*bar;
    ch = cast(foo)-bar;
    ch = cast(foo)+45;
    ch = cast(foo)&45;
}