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  1. #include <stdio.h>
  2. //フィボナッチ数列
  3. //int rec(int n){
  4.  
  5. //}
  6.  
  7. int main(void) {
  8.     int n = 1;
  9.    // for(int i=1;i<=n;i++){
  10.    int an=0,b=1,c=1;
  11.    if(n==1){
  12.    	an=1;
  13.    }
  14.    else if(n==2){
  15.    	an=1;
  16.    }
  17.    else{
  18.    	for(int i=3;i<=n;i++){
  19.    		an=b+c;
  20.    		c=b;
  21.    		b=an;
  22.    	}
  23.    }
  24.         printf("フィボナッチ数列の第%d項は%d\n", n, an);
  25.    // }
  26. 	return 0;
  27. }
  28.  
  29.  
Success #stdin #stdout 0.01s 5276KB
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フィボナッチ数列の第1項は1
https://ideone.com/D9key4
language:
C (gcc 8.3)
created:
8 days ago
visibility:
public

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