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  1. #include <stdio.h>//第1講演習 4-3
  2.  
  3. int fibo(int n){
  4. 	int i,a,b,f;
  5. 	if(n<=1)return 1;
  6. 	else{
  7. 		for(i=2,a=1,b=1;i<=n;i++){
  8. 			f=a+b;
  9. 			b=a;
  10. 			a=f;
  11. 		}
  12. 		return f;
  13. 	}
  14. }
  15. int main() {
  16. 	int x,n;
  17. 	n=7;
  18. 	x=fibo(n);
  19. 	printf("fibo(%d)=%d",n,x);
  20. 	return 0;
  21. }
  22.  
Success #stdin #stdout 0s 5288KB
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Standard input is empty
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fibo(7)=21
https://ideone.com/yrKALI
language:
C (gcc 8.3)
created:
3 hours ago
visibility:
public

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