Programing Puzzles (another bonus) (Spoiler)

[Wyverex]

BCS wrote:
> 
> char a=0,b=0,c=0,d=0;
> while(a<5 || b<9 || c<5 || d<9)
> {
>   writef("%d%d:%d%d\n", a,b,c,d);
> 
>   // add a single /expression/ here
> }
> 
> make that count from "00:00" to "59:59" (minutes and seconds)
> 
> I seem to remember I figured this out once, but I don't remember how I 
> did it.
> 
> 




import std.stdio;

void main()
{


char a=0,b=0,c=0,d=0;

do{
   writef("%d%d:%d%d\n", a,b,c,d);

    ( d == 9 ? d = 0 || (c == 5 ? c = 0 || ( b == 9 ? b = 0 || ++a : ++b 
)  : ++c) : ++d);

}while(a<6 || b<0 || c<0 || d<0)

}