C++ String erase()

str.erase(pos,len);
str.erase(itr);
str.erase(first,last);

#include<iostream>
using namespace std;
int main()
{
    string str="this is a java tutorial";
    str.erase(8,1);
    cout<<str;
    return 0;
}

this is java tutorial

#include<iostream>
using namespace std;
int main()
{
    string str="java programming";
    str.erase(str.begin()+11);
    cout<<str;
    return 0;
}

java programing

#include<iostream>
using namespace std;
int main()
{
    string str="this is an example of C and C++";
    str.erase(str.begin()+24,str.end());
    cout<<str;
    return 0;
}

this is an example of C