What is the output of this program?#include <iostream>

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What is the output of this program?

#include <iostream>
    #include <fstream>
    using namespace std;
    int main () 
    {
        int len;
        char * buff;
        ifstream is;
        is.open ("Example.txt", ios :: binary );
        is.seekg (0, ios :: end);
        len = is.tellg();
        is.seekg (0, ios :: beg);
        buff = new char [len];
        is.read (buff, len);
        is.close();
        cout.write (buff, len);
        delete[] buff;
        return 0;
    }

1. Example.text
2. This is example
3. Example
4. Compilation Error
5. Runtime Error

Correct Option: E

In this program, if the file exist, it will read the file. Otherwise it will throw an exception. A runtime error will occur because the value of the length variable will be “-1” if file doesn’t exist and in line 13 we are trying to allocate an array of size “-1”.