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  1. #include <stdio.h>
  2. int a(int n) {
  3. 	if(n<=1){
  4. 		return 1;
  5. 	}
  6. 	return 2*a(n-1)+2;
  7.  
  8. }
  9. int main(void) {
  10. int n;
  11. scanf("%d", &n);
  12. printf("a(%d)の値は%d\n", n, a(n));
  13. return 0;
  14. }
  15.  
Success #stdin #stdout 0.01s 5316KB
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5
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a(5)の値は46
https://ideone.com/iOQZyP
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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