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- #include <iostream>
- using namespace std;
- struct Reverse
- {
- int num;
- int reverseNumber(int num);
- };
- //(struct內已經宣告過,不必再次宣告)
- //int Reverse::reverseNumber(int num);
- int main()
- {
- Reverse reverse;
- cin >> reverse.num;
- int reversedNum;
- reversedNum=reverse.reverseNumber(reverse.num);
- cout << reversedNum << endl;
- return 0;
- }
- int Reverse::reverseNumber(int num)
- {
- // 當數字為 0 時直接輸出 0
- if (num == 0)
- {
- return 0;
- }
- // 反轉數字同時忽略尾部的零
- int reversedNum = 0;
- while (num > 0)
- {
- int digit = num % 10; // 獲取最後一位數
- num /= 10; // 移除最後一位數
- if (digit == 0 && reversedNum == 0)
- {
- // 忽略尾部的零
- continue;
- }
- reversedNum = reversedNum * 10 + digit; // 將數字反轉
- }
- return reversedNum;
- }
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