grade

#!/bin/bash
printf "\n\n### Multiply ###\n\n"
exe() { printf "\n"; echo "! ${@/eval/}" ; "$@" ; }

DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
cd $DIR

rm -f main.exe
exe make
ERROR=$?
if [ $ERROR -eq 0 ]; then
  printf "\n! run on inputs\n"

  let right=0
  let wrong=0

  for inputFilename in $( ls input-*.io ); do
      expectedFilename="${inputFilename/input-/output-}" 
      caseName="${inputFilename/input-/}" 
      caseName="${caseName/[.]io/}" 
      userOutput=$( ./main.exe < $inputFilename )
      trueOutput=$( cat "$expectedFilename" )
      printf "\n$caseName:\n  * Your output=$userOutput\n  * True output=$trueOutput\n"
      if [ "$userOutput" == "$trueOutput" ]; then
          let right++
      else
          let wrong++
      fi
  done
  printf "\n*** Right: $right. Wrong: $wrong. ***\n"
  let "grade = right * 100 / (right + wrong)"
else
  grade=0
fi
printf "\n$grade [signature]\n"
rm -f main.exe