assignment 1 solution: I don't understand

[christie xu]

I don't understand why instructor put
if (arg.length==1)
{
....
}
else
....
what if someone entered more than 1 word? so it is invalid?

[Johannes de Jong]

The instructor is checking that only one number is entered.
If you entered more than one number the else clause will be executed.

[Marilyn de Queiroz]

We want you to assume only one name from the command line.
One of the rules of the cattle drive is don't add extra stuff unless specifically mentioned. It just makes more work for us.

[Richard Boren]

Us greenhorns have to read the assignments VERY carefully.
It says: "Except a value from the command line and print it to the screen one hundred times".
It expects a single value not multiple values to be entered, so the solution checks for a args array length of one. Also read the message printed out if more or less than one argument is entered - else { ..."Usage:...".
I too questioned the limited scope of the condition statement in the solution. However after reading the assignment more closely I realized that only one argument was ever expected to be passed. Why do more than the assignment requires.