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  1. #include <stdio.h>
  2. //練習問題G
  3. int main(void) {
  4. 	int n = 3;
  5. 	 int a, b=2, c=1;
  6.     int i;
  7.     for(i=3;i<=n;i++){
  8.     	a=b+2*c-2*i;
  9.     	b=a;
  10.     	c=b;
  11.     }
  12.     printf("数列anについて, n=%dのときの値は%d\n", n, a);
  13. 	return 0;
  14. }
  15.  
  16.  
Success #stdin #stdout 0.01s 5316KB
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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/cYTmXi
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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