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  1. #include <stdio.h>
  2. //練習問題G
  3.  
  4. int func(int n){
  5.     int a, b=2, c=1;
  6.     int i;
  7.  
  8.  
  9.  
  10.  
  11.     for(i=2; i<n; i++){
  12.     	a=-2*b+2*c;
  13.     	c=b;
  14.     	b=a;
  15.  
  16.     }
  17. return a;
  18.  
  19. }
  20.  
  21. int main(void) {
  22. 	int n = 3;
  23.     printf("数列anについて, n=%dのときの値は%d\n", n, func(n));
  24. 	return 0;
  25. }
  26.  
Success #stdin #stdout 0.01s 5288KB
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Standard input is empty
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数列anについて, n=3のときの値は-2
https://ideone.com/zHn5T6
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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