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  1. #include <stdio.h>
  2. //a{n}=2a_{n-1}+3, a{0}=-2(再帰無し版)
  3. int main(void) {
  4.     int n,an;
  5.     n = 4;
  6.     an = -2;
  7.     for(int i=0;i<n;i++){
  8.     	an=2*an+3;
  9.  
  10.     }
  11.  
  12.  
  13.  
  14.     printf("数列anの%d番目の値は%d\n", n, an);
  15. 	return 0;
  16. }
  17.  
Success #stdin #stdout 0s 5320KB
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数列anの4番目の値は13
https://ideone.com/pxt17i
language:
C (gcc 8.3)
created:
8 hours ago
visibility:
public

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