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  1. #include <stdio.h>
  2. int rec(int n){
  3. 	if(n==0){
  4. 		return -2;
  5. 	}
  6. 	else{
  7. 		return 2*rec(n-1)+3;
  8. 	}
  9. }
  10.  
  11. int main(void) {
  12. 	// your code goes here
  13. 	int n;
  14. 	n=4;
  15. 	printf("数列anの%d番目の値は%d\n",n,rec(n));
  16. 	return 0;
  17. }
  18.  
Success #stdin #stdout 0s 5324KB
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数列anの4番目の値は13
https://ideone.com/VwnO6O
language:
C (gcc 8.3)
created:
4 days ago
visibility:
public

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