About mon.write

I was using the ComputerCraftv1.3.3 .
I want to print a string in the monitor.
My code:
mon.write("ni hao")
When I ran the program, I saw this :
m:1: attempt to index ? (a nil value)
Who can help me?

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libook, on 19 July 2012 - 09:14 AM said:

I was using the ComputerCraftv1.3.3 .
I want to print a string in the monitor.
My code:
mon.write("ni hao")
When I ran the program, I saw this :
m:1: attempt to index ? (a nil value)
Who can help me?

You have to define mon first.

On the top of the code, put this:

mon = peripheral.wrap("<side>")