C++实现数字中0、1、2的统计与输出

```cpp #include <iostream> #include <string> using namespace std; int main() { string n; cin >> n; int count0 = 0, count1 = 0, count2 = 0; for (char c : n) { if (c == '0') count0++; else if (c == '1') count1++; else if (c == '2') count2++; } cout << count0 << " " << count1 << " " << count2 << endl; return 0; } ``` ######[AI问答 | 140点数解答 | 2026-05-23 15:33:23]