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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int n=4;
  5. 	int a,b,c;
  6. 	b=2;
  7. 	c=1;
  8. 	for(int i=3;i<=n;i++){
  9. 		a=-6*b-9*c;
  10. 		c=b;
  11. 		b=a;
  12. 	}
  13. 	printf("数列a%dの値は%d\n",n,a);
  14. 	// your code goes here
  15. 	return 0;
  16. }
  17.  
Success #stdin #stdout 0s 5320KB
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Standard input is empty
stdout
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数列a4の値は108
https://ideone.com/x252XY
language:
C (gcc 8.3)
created:
5 days ago
visibility:
public

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