View Code of Problem 50

#include <iostream>
#include <cstdio>
using namespace std;
int main(){
    string s;
    int flag=1;
    getline(cin,s);
    for(int i=0;i<s.length();i++){
        if(s[i]>='0'&&s[i]<='9'){
            cout<<s[i];
            flag=1;
        }
        else if(flag==1){
            flag=0;
            cout<<"*";
        }
    }
    cout<<endl;
    return 0;
}