fork download
copy 
  1. #include <stdio.h>
  2.  
  3. int comb(int n, int r){
  4. 	int ans=0;
  5. 	if(r==1){
  6. 		return n;
  7. 	}
  8. 	else{
  9. 		ans=(comb(n-1, r-1)*n)/r;
  10. 		return ans;
  11. 	}
  12.  
  13. }
  14. int main(void) {
  15. 	printf("%d\n", comb(5,2));
  16. 	printf("%d\n", comb(6,3));
  17. 	printf("%d\n", comb(7,4));
  18. 	return 0;
  19. }
  20.  
Success #stdin #stdout 0s 5312KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
10
20
35
https://ideone.com/vpigd2
2-0
language:
C (gcc 8.3)
created:
9 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!