Question

char arr[100];
cin.get(arr,100);

1. Is this safe? Will the null-character be appended at the end even if I type more than 100 chars? or should I use cin.get(arr,99)?
2. When I type ENTER, is the end-of-line character part of the array or not?

Answer 1

The answers to both of your questions can be found here, but to reiterate:

1. The get method reads at most n - 1 characters. This means that the method expects the size of the buffer and not the number of characters to read. This method automatically appends a null character to the end.

2. The newline character is not extracted or stored in the array.

You may also want to consider using std::getline which you can use in conjunction with std::string.