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  1. #include <stdio.h>
  2. int num = 0;
  3. int func(int n){
  4.     num++;    
  5.     if (n == 1){
  6.         return 1;
  7.     }
  8.     else if (n%2 == 0){
  9.         return func(n/2);
  10.     }
  11.     else{
  12.         return func(3*n + 1);
  13.     }
  14. }
  15. int main(void){
  16.     int x = 4, y =5;
  17.     printf("実行結果1: %d\n", func(x));
  18.     printf("実行結果2: %d\n", num);
  19.  
  20.     num = 0;
  21.     printf("実行結果3: %d\n", func(y));
  22.     printf("実行結果4: %d\n", num);
  23.     return 0;
  24. }
  25.  
  26.  
Success #stdin #stdout 0s 5320KB
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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: 3
実行結果3: 1
実行結果4: 6
https://ideone.com/nhWI9w
language:
C (gcc 8.3)
created:
5 days ago
visibility:
public

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