Simple3.il

//----------- Program header
.assembly extern mscorlib { auto }
.assembly OddOrEven { }
.module OddOrEven.exe
//----------- Aliasing
.typedef [mscorlib]System.Console as TTY
.typedef method void TTY::WriteLine(string) as PrintLine
//----------- Class Declaration
.class public Odd.Or.Even {
//------------ Field declaration
  .field public static int32 val
//------------ Method declaration
  .method public static void check( ) {
    .entrypoint
    .locals init (int32 Retval)
  AskForNumber:
    ldstr "Enter a number"
    call PrintLine
    .try { 
      // Guarded block begins
      call string TTY::ReadLine()
      // pop
      // ldnull
      ldstr "%d" 
      ldsflda int32 Odd.Or.Even::val
      call vararg int32 sscanf(string,string,...,int32*)
      stloc.0
      leave.s DidntBlowUp
      // Guarded block ends
    } 
    catch [mscorlib]System.Exception
    { // Exception handler begins
      pop
      ldstr "KABOOM!"
      call PrintLine
      leave.s Return
    } // Exception handler ends
  DidntBlowUp:
    ldloc.0
    brfalse.s Error
    ldsfld int32 Odd.Or.Even::val
    ldc.i4.1
    and
    brfalse.s ItsEven
    ldstr "odd!"
    br.s PrintAndReturn
  ItsEven:
    ldstr "even!"
    br.s PrintAndReturn
  Error:
    ldstr "How rude!"
  PrintAndReturn:
    call PrintLine
    ldloc.0
    brtrue.s AskForNumber
  Return:
    ret
  } // End of method
} // End of class
//------------ Calling unmanaged code
.method public static pinvokeimpl("msvcrt.dll" cdecl)
      vararg int32 sscanf(string,string) { }