题解 | #表示数字#

#include <iostream>
using namespace std;
#include <string>
#include <cctype>
int main() {
    string str;
    getline(cin, str);
    for (int i = 0; i < str.size() ;i++) {
        if(isdigit(str[i])){
            cout << "*";
            cout << str[i];
            i++;
            while(isdigit(str[i])){
                cout << str[i];
                i++;
            }
            cout << "*";
            if(i<str.size()){
                cout <<str[i];
            }
            
        }
        else{
            cout << str[i];
        }
    }
}

遇到数字就进行特殊输出即可