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  1. #include <stdio.h>
  2.  
  3.  
  4. int func(int n){
  5.     int a = -1;  
  6.     int i;
  7.  
  8.     for(i = 1; i <= n; i++){
  9.         a = 3 * a + 5;   
  10.     }
  11.     return a;  
  12. }
  13.  
  14. int main(void) {
  15.     int n = 3;
  16.     printf("数列anについて, n=%dのときの値は%d\n", n, func(n));
  17.     return 0;
  18. }
  19.  
Success #stdin #stdout 0s 5280KB
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Standard input is empty
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数列anについて, n=3のときの値は38
https://ideone.com/hDis7K
language:
C (gcc 8.3)
created:
19 days ago
visibility:
public

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