prog.cs(7,12): error CS0117: `System.Console' does not contain a definition for `Writeln'
/usr/lib/mono/4.5/mscorlib.dll (Location of the symbol related to previous error)
prog.cs(15,12): error CS0117: `System.Console' does not contain a definition for `Writeln'
/usr/lib/mono/4.5/mscorlib.dll (Location of the symbol related to previous error)
Compilation failed: 2 error(s), 0 warnings