main = this where this = 0
Standard input is empty
[1 of 1] Compiling Main ( prog.hs, prog.o )
prog.hs:2:14:
No instance for (Num (IO a))
arising from the literal `0' at prog.hs:2:14
Possible fix: add an instance declaration for (Num (IO a))
In the expression: 0
In the definition of `this': this = 0
In the definition of `main':
main = this
where
this = 0
Standard output is empty