/******************************************************************************
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#include <iostream>
#include <string>
using namespace std;
int main()
{
string s1 = "this is a string~";
s1[2] = '\0';
string s2 = "\0also a string~";
cout<<"the length of s1 - ("<<s1<<") : "<<s1.size()<<endl;
cout<<"the length of s2 - ("<<s2<<") : "<<s2.size()<<endl;
return 0;
}