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  1. #include <stdio.h>
  2. //練習問題F
  3.  
  4. int func(int n){
  5.     int a = -1;  // a0 = -1
  6.     int i;
  7.  
  8.     for(i = 1; i <= n; i++){
  9.         a = 3 * a + 5;  // an = 3*an-1 + 5
  10.     }
  11.  
  12.     return a;
  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 5292KB
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数列anについて, n=3のときの値は38
https://ideone.com/ddRRsO
language:
C (gcc 8.3)
created:
18 days ago
visibility:
public

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