#include <iostream>
#include <cctype>
using namespace std;
 
int main() {
    string s = "Hello, World! 2025";
    int letters = 0, digits = 0, spaces = 0, others = 0;
 
    for (char c : s) {
        if (isalpha(c)) letters++;
        else if (isdigit(c)) digits++;
        else if (isspace(c)) spaces++;
        else others++;
    }
 
    cout << "字母: " << letters << endl;
    cout << "数字: " << digits << endl;
    cout << "空格: " << spaces << endl;
    cout << "其他: " << others << endl;
    return 0;
}

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