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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int n=4;
  5. 	int a,b=3,c=2;
  6. 	for(int i=3;i<=n;i++){
  7. 		a=2*b+c;
  8. 		c=b;
  9. 		b=a;
  10. 	}
  11. 	printf("数列a%dの値は%d\n",n,a);
  12. 	return 0;
  13. }
  14.  
Success #stdin #stdout 0s 5312KB
comments (?)
stdin 
Standard input is empty
stdout 
数列a4の値は19
https://ideone.com/Ozy2nO
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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