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  1. #include <stdio.h>
  2. int hoge(int n){     int i, x0 = 0, x1 = 1, x;
  3.  
  4.     if(n == 0) return 0;
  5.     if(n == 1) return 1;
  6.  
  7.     for(i = 2; i <= n; i++){
  8.         x = 4 * x1 + 3 * x0;
  9.         x0 = x1;
  10.         x1 = x;
  11.     }
  12.  
  13.     return x1;
  14.  
  15.  
  16. }
  17. int main(){
  18. printf("%d",hoge(3));
  19. return 0;
  20. }
Success #stdin #stdout 0s 5324KB
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19
https://ideone.com/bxioqv
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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