Thread: do while loop

Whats wrong with this loop?
I cant proceed with the program even when S or R is input.
I can exit if I take the || out but I need to repeat untill I get a R or a S.

Code:

do
		{
		printf ("Enter R for Required or S for Suggested: ");
		while (getchar() != '\n');
		reqOrSugg = getchar();
		printf ("You entered %c\n", reqOrSugg);
		}
while (reqOrSugg != 'R' || 'S');