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  1. #include <stdio.h>
  2.  
  3. int a(int n){
  4. 	if(n==0){
  5. 		return 0;
  6. 	}else{
  7. 		return 3*a(n-1)+4;
  8. 	}
  9. }
  10. int main(void) {
  11. 	// your code goes here
  12. 	int k;
  13. 	k=a(2);
  14. 	printf("%d",k);
  15. 	return 0;
  16. }
  17.  
Success #stdin #stdout 0s 5308KB
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stdin 
Standard input is empty
stdout 
16
https://ideone.com/4ktZBu
language:
C (gcc 8.3)
created:
12 days ago
visibility:
public

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