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  1. #include <stdio.h>
  2. //練習問題F
  3.  
  4. int func(int n){
  5.     int a=-1;
  6.     int i;  
  7.     int sum;
  8. 	for(i=1;i<=n;i++){
  9. 		sum=3*a+ 5;
  10.         a=sum;
  11. 	}
  12. 	return sum;
  13.  
  14. }
  15. int main(void) {
  16. 	int n = 3;
  17.     printf("数列anについて, n=%dのときの値は%d\n", n, func(n));
  18. 	return 0;
  19. }
  20.  
Success #stdin #stdout 0s 5320KB
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数列anについて, n=3のときの値は38
https://ideone.com/HhgHO7
language:
C (gcc 8.3)
created:
18 days ago
visibility:
public

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