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  1. #include <stdio.h>
  2. //練習問題E
  3. 	int tri(int n){
  4. 		if(n==0)return 0;
  5. 		else if(n==1)return 0;
  6. 		else if(n==2)return 1;
  7. 		else return tri(n-1)+tri(n-2)+tri(n-3);
  8. 	}
  9.  
  10.  
  11.  
  12. int main(void) {
  13. 	int n = 7;
  14.     printf("数列Tnについて, n=%dのときの値は%d\n", n, tri(n));
  15. 	return 0;
  16. }
  17.  
Success #stdin #stdout 0.01s 5288KB
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Standard input is empty
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数列Tnについて, n=7のときの値は13
https://ideone.com/5y1a8x
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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