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  1. #include <stdio.h>
  2. //フィボナッチ数列
  3. int rec(int n){
  4. 	int a1=1;
  5. 	int a2=1;
  6. 	int a3;
  7. 	for(int i=3;i<=n;i++){
  8. 		a3=a2+a1;
  9.  		a1=a2;
  10.  		a2=a3;
  11.  }
  12.  return a3;
  13. }
  14.  
  15. int main(void) {
  16.     int n = 10;
  17.         printf("フィボナッチ数列の第%d項は%d\n", n, rec(n));
  18. 	return 0;
  19. }
  20.  
  21.  
Success #stdin #stdout 0s 5276KB
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フィボナッチ数列の第10項は55
https://ideone.com/1xtzWJ
language:
C (gcc 8.3)
created:
73 days ago
visibility:
public

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