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  1. #include <stdio.h>
  2.  
  3. int rec(int n){
  4. 	if(n==0){
  5. 		return -2;
  6. 	}
  7. 	else{
  8. 		return 2*rec(n-1)+3;
  9. 	}
  10. }
  11.  
  12. int main(void){
  13.  
  14. 	int n;
  15. 	n=4;
  16. 	printf("%d",rec(n));
  17. 	return 0;
  18.  
  19. }
Success #stdin #stdout 0.01s 5292KB
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stdin 
Standard input is empty
stdout 
13
https://ideone.com/7nD5fE
language:
C (gcc 8.3)
created:
7 days ago
visibility:
public

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