notice that it's printing integer only you are not returning anything when n==1 so whatever the printf returns will be returns and see that printf returns the number of characters printed the sequence of printing will be --- in the opposite order
first f(1) will return 1 then f(2) prints 2*f(1) --> *2* and returns no. characters printed i.e. 1 then f(3) prints 3*f(2) --> *3* and returns no. characters printed i.e. 1 then f(4) prints 4*f(3) --> *4* and returns no. characters printed i.e. 1 . . . . . then f(9) prints 9*f(8) --> *9* and returns no. characters printed i.e. 1 then f(10) prints 10*f(9) --> *10* and returns no. characters printed i.e. 2 f(11) will print 11*2 --> *22* . . . . . f(20) will print 20*2 --> *40* and hence the output is 234567891022242628303234363840 http://ideone.com/U4pJS try to run it like machine will run you will get your doubt cleared for clarification print newline("\n") after each printf u will get to know what's happening hope it helps !! -- Amol Sharma Third Year Student Computer Science and Engineering MNNIT Allahabad On Sat, Jul 30, 2011 at 3:04 PM, Abhishek Gupta <gupta.abh...@gmail.com>wrote: > #include<stdio.h> > int main() > { > factorial(20); > return 0; > } > > int factorial(int n) > { > if(n==1) > return 1; > else > printf("%d",n*factorial(n-1)); > } > > > its printing the result. i think it should not as sizeof(int) on linux > fedora 15 compile:gcc is 4bytes. > can anyone explain why? > > -- > Abhishek Gupta > MCA > NIT Calicut > Kerela > > -- > You received this message because you are subscribed to the Google Groups > "Algorithm Geeks" group. > To post to this group, send email to algogeeks@googlegroups.com. > To unsubscribe from this group, send email to > algogeeks+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/algogeeks?hl=en. > -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
