Thread: Easy Question View Single Post
2009-10-01, 13:03   #4
R.D. Silverman

Nov 2003

26·113 Posts

Quote:
 Originally Posted by Unregistered I'm a complete noob when it comes to programming in c, but you have to start somewhere. I ran into a question about factorials. Can you use "n!"? It didnt work for me, I instead went about it the long way, # include int main (void) { int n, n1 = 1, n2 = 2, n3 = 3, n4 = 4, n5 = 5, n6 = 6, n7 = 7, n8 = 8, n9 = 9, n10 = 10, nResult; printf("-n- -n!\n\n"); printf( "%i %2i\n" , n1 , nResult = n1); printf( "%i %2i\n", n2, nResult = n1 * n2); printf( "%i %2i\n", n3, nResult = n1 * n2 * n3); printf( "%i %2i\n", n4, nResult = n1 * n2 * n3 * n4); printf( "%i %2i\n", n5, nResult = n1 * n2 * n3 *n4 * n5); and so on.... } Whats an easier way?
Let me start by asking: Are you a novice programmer in general?

You do realize that the multiplication of two integers can overflow?

Do you know how to code recursive functions in any language (i.e. not
specifically C?). If not, may I assume that you at least know how to
code a simple loop?

Do you have any understanding of multi-precision arithmetic?

Aside from the issue of the choice of programming language, may