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  1. #include <stdio.h>
  2.  
  3. int hex(int n){
  4. 	if(n==1){
  5. 		return 1;
  6. 	}else{
  7. 		return hex(n-1) + 6*n-6;
  8. 	}
  9. }
  10. int main(void) {
  11.     int n=3;
  12.     printf("%d",hex(n));
  13.  
  14. 	return 0;
  15. }
  16.  
Success #stdin #stdout 0.01s 5324KB
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stdin 
Standard input is empty
stdout 
19
https://ideone.com/G0mQ84
language:
C99 (gcc 8.3)
created:
12 days ago
visibility:
public

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