#1 Capstone Project

main.dart

import 'dart:io';

void main() {
//   Problem Statement #

// Given the final percentage a student has gotten at the end of a semester,
// you need to write a program that decides if the student has passed or failed the semester.

// If the percentage is higher than or equal to 60, the student has passed the semester.
// If the percentage is lower than 60, the student has failed the semester.

// However, the percentage is not the only thing that determines if a student has passed or failed.
// A student does not pass if their score is 5 points below the class average.
// For instance, if the average class score is 70, the student must have a minimum score of 65 to pass.

// If the average class score is 50, the student still needs a score of 60 to pass based on our first condition.

  // int studentScore, averageClassScore;

  try {
    stdout.write('Enter the student score here : ');
    int studentScore = int.parse(stdin.readLineSync()!);

    if (studentScore < 0 || studentScore > 100) {
      print('------------- ERROR ALERT -------------');
      print('Your input score must not be greater than 100 nor lesser than 0');
      stdout.write('Enter the student score here : ');
      studentScore = int.parse(stdin.readLineSync()!);
    } else {
      stdout.write('Enter the average class score here : ');
      int averageClassScore = int.parse(stdin.readLineSync()!);

      final int passPoint = averageClassScore - 5;

      // this condition check if the student score is more than 60 for he/she to pass the semester.
      if (studentScore >= 60 && studentScore >= passPoint) {
        // this condition check if the average class score is 50, and the student still score of 60 to pass.
        if (averageClassScore <= 60 && studentScore >= 60) {
          print('This student has passed this semester');
          // this condition check if the average class score is more than 50 and if the student score up to the pass mark.
        } else if (averageClassScore >= 60 && studentScore >= passPoint) {
          print('This student has passed this semester');
        } else {
          print('This student has failed this semester');
        }
      } else {
        print('This student has failed this semester');
      }
    }
  } catch (e) {
    print('------------- INVALID INPUT -------------');
    print('Score must be a valid integer value');
  }
}