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  1. #include <stdio.h>
  2.  
  3. int hoge(int n) {
  4.     int i;
  5.     int a=0;
  6.     int b=1;
  7.     int result;
  8.  
  9.     if (n == 0) return a;
  10.     if (n ==1) return b;
  11.  
  12.     for(i = 2; i <= n; i++) {
  13.         result = 4 * b + 3 * a;
  14.         a = b;
  15.         b = result;
  16.     }
  17.  
  18.     return result;
  19. }
  20.  
  21. int main() {
  22.     printf("%d", hoge(3));  
  23.     return 0;
  24. }
Success #stdin #stdout 0s 5292KB
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19
https://ideone.com/A9Vt1g
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

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