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  1. #include <stdio.h>
  2. //a{n} = 2a{n-1} + 3, a{0}=-2(再帰あり版)
  3. int rec(int n){
  4.      if(n==0){
  5.      	return -2;
  6.      }
  7.      else{
  8.      	return 2*rec(n-1)+3;
  9.      }
  10. }
  11.  
  12. int main(void) {
  13.     int n = 4;
  14.     printf("数列anの%d番目の値は%d\n", n, rec(n));
  15. 	return 0;
  16. }
  17.  
  18.  
Success #stdin #stdout 0s 5316KB
comments (?)
stdin 
Standard input is empty
stdout 
数列anの4番目の値は13
https://ideone.com/3Tq6Q8
第4回練習問題B
language:
C (gcc 8.3)
created:
14 days ago
visibility:
public

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