summation

[Crazyike]

how do i do summation of n+sin(n) without A while loop, only for?

[Dave Sinkula]

Why not post the code of how you'd do it with a while loop? Then maybe your best attempt at converting it to a for loop?

[Narue]

All of the parts of a for loop are optional. For example, to write an infinite loop you might do this:

for ( ; ; ) {
  /* Stuff */
}

Converting a while loop to a for loop is trivial with that little tidbit. Of course, there are other ways, but they require restructuring the loop a bit.