#include<iostream>
#include <string>
using namespace std;
int main()
{
string input;
int n,m;
cout<<"Enter a student's name, social security number, user id, and password in one line:";
getline(cin,input);
n=input.find(' ',0);
input.replace(n+1,7,"xxx-xx-xxxx");
n=input.find(' ',n+13)+1;
m=input.length();
m=m-n;
input.erase(n,m);
input.insert(n,m,'x');
cout<<"changed: "<<input<<endl;
system("pause");
return 0;
}
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