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curriculum/challenges/english/blocks/review-js-fundamentals-by-building-a-gradebook-app/6626b8dcf5057f896f948440.md

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--description--

Now that the teacher has all of the information they need, they want to be able to message the student with the results.

Complete the studentMsg function with totalScores and studentScore for parameters. The function should return a string representing a message to the student.

If the student passed the course, the string should follow this format:

md
Class average: average-goes-here. Your grade: grade-goes-here. You passed the course.

If the student failed the course, the string should follow this format:

md
Class average: average-goes-here. Your grade: grade-goes-here. You failed the course.

Replace average-goes-here with the average of the total scores. Replace grade-goes-here with the student's grade.

Tips

  • Use the getAverage function to get the class average.
  • Use the getGrade function to get the student's grade.
  • Use string concatenation (+) to build the message.
  • Be careful with the punctuation and spaces in the message.

--hints--

studentMsg([92, 88, 12, 77, 57, 100, 67, 38, 97, 89], 37) should return the following message: "Class average: 71.7. Your grade: F. You failed the course.".

js
assert.strictEqual(studentMsg([92, 88, 12, 77, 57, 100, 67, 38, 97, 89], 37), "Class average: 71.7. Your grade: F. You failed the course.");

studentMsg([56, 23, 89, 42, 75, 11, 68, 34, 91, 19], 100) should return the following message: "Class average: 50.8. Your grade: A++. You passed the course.".

js
assert.strictEqual(studentMsg([56, 23, 89, 42, 75, 11, 68, 34, 91, 19], 100), "Class average: 50.8. Your grade: A++. You passed the course.");

Your studentMsg function should return the correct message based on the student's score and the class average.

js
assert.strictEqual(studentMsg([33, 44, 55, 66, 77, 88, 99, 100], 92), "Class average: 70.25. Your grade: A. You passed the course.");
assert.strictEqual(studentMsg([33, 44, 55, 66, 77, 88, 99, 100], 57), "Class average: 70.25. Your grade: F. You failed the course.");

--seed--

--seed-contents--

js
function getAverage(scores) {
  let sum = 0;

  for (const score of scores) {
    sum += score;
  }

  return sum / scores.length;
}

function getGrade(score) {
  if (score === 100) {
    return "A++";
  } else if (score >= 90) {
    return "A";
  } else if (score >= 80) {
    return "B";
  } else if (score >= 70) {
    return "C";
  } else if (score >= 60) {
    return "D";
  } else {
    return "F";
  }
}

function hasPassingGrade(score) {
  return getGrade(score) !== "F";
}

--fcc-editable-region--
function studentMsg(totalScores, studentScore) {

}
console.log(studentMsg([92, 88, 12, 77, 57, 100, 67, 38, 97, 89], 37));
--fcc-editable-region--

--solutions--

js
function getAverage(scores) {
  let sum = 0;

  for (const score of scores) {
    sum += score;
  }

  return sum / scores.length;
}

function getGrade(score) {
  if (score === 100) {
    return "A++";
  } else if (score >= 90) {
    return "A";
  } else if (score >= 80) {
    return "B";
  } else if (score >= 70) {
    return "C";
  } else if (score >= 60) {
    return "D";
  } else {
    return "F";
  }
}

function hasPassingGrade(score) {
  return getGrade(score) !== "F";
}

function studentMsg(totalScores, studentScore) {
  let average = getAverage(totalScores);
  let grade = getGrade(studentScore);

  return `Class average: ${average}. Your grade: ${grade}. You ${
    hasPassingGrade(studentScore) ? "passed" : "failed"
  } the course.`;
}