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  1. #include <stdio.h>
  2.  
  3. int num;
  4.  
  5. int col(int n){
  6.     num++;
  7.     if (n == 1){
  8.         return 1;
  9.     }
  10.     else if (n % 2 == 0){
  11.         return col(n / 2);
  12.     }
  13.     else{
  14.         return col(3 * n + 1);
  15.     }
  16. }
  17.  
  18. int main(void){
  19.     int x = 10;
  20.     printf("実行結果1: %d\n", col(x));
  21.     printf("実行結果2: %d\n", num);
  22.     return 0;
  23. }
Success #stdin #stdout 0.01s 5288KB
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stdin
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Standard input is empty
stdout
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実行結果1: 1
実行結果2: 7
https://ideone.com/MeIcPR
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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