C++ 代码

#include<cstdio>
#include<iostream>
#include<cstring>
using namespace std;
int main()
{
    string s;
    getline(cin,s);
    char c;
    cin >> c;
    for(char &a:s)
    {
        if(a == c)
        a = '#';
    }
    cout << s << endl;
    return 0;
}