How to read integer in Erlang?

Question

I\'m trying to read user input of integer. (like cin >> nInput; in C++)
I found io:fread bif from http://www.erlang.org/doc/man/io.html, so I write code like this.

Answer 1

Try printing the number with ~w instead of ~p:

1> io:format("~w~n", [[10]]).
[10]
ok
2> io:format("~p~n", [[10]]).
"\n"
ok

The ~p format specifier tries to figure out whether the list might be a string, but ~w never guesses; it always prints lists as lists.