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  1. #include <iostream>
  2. #include <string>
  3. using namespace std;
  4. int main()
  5. {
  6.     string a;
  7.     cout << "请输入一个字符串：";
  8.     cin >> a;
  9.  
  10.     int len = a.length();
  11.     for (int i = len - 1; i >= 0; i--)
  12.     {
  13.         cout << a[i];
  14.     }
  15.     cout << endl;
  16.  
  17.     return 0;}
  18.  
  19.  
Success #stdin #stdout 0s 5284KB
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stdin
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45
stdout
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请输入一个字符串：54
https://ideone.com/xoUtcm
language:
C++14 (gcc 8.3)
created:
7 days ago
visibility:
public

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