Question

Choose the output returned when an error condition is generated while read() reads from the console.

(a) False

(b) 0

(c) -1

(d) All of the mentioned

The question was asked in my homework.

Question is from Introduction of Console I/O Operations topic in section Console I/O Operations and Stream Classes of C#

Answer 1

Right option is (c) -1

To explain I would say: Read() returns –1 on error. This method also throws an IOException on failure.