└── Task 1.java


/Task 1.java:
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 1 | import java.util.Scanner;
 2 | 
 3 | public class GradeCalculator {
 4 |     public static void main(String[] args) {
 5 |         Scanner scanner = new Scanner(System.in);
 6 | 
 7 |         System.out.print("Enter the number of subjects: ");
 8 |         int numSubjects = scanner.nextInt();
 9 | 
10 |         // Input marks for each subject
11 |         int[] marks = new int[numSubjects];
12 |         for (int i = 0; i < numSubjects; i++) {
13 |             System.out.printf("Enter marks for subject %d (out of 100): ", i + 1);
14 |             marks[i] = scanner.nextInt();
15 |         }
16 | 
17 |         // Calculate total marks
18 |         int totalMarks = 0;
19 |         for (int mark : marks) {
20 |             totalMarks += mark;
21 |         }
22 | 
23 |         // Calculate average percentage
24 |         double averagePercentage = (double) totalMarks / numSubjects;
25 | 
26 |         // Grade calculation
27 |         char grade;
28 |         if (averagePercentage >= 90) {
29 |             grade = 'A';
30 |         } else if (averagePercentage >= 80) {
31 |             grade = 'B';
32 |         } else if (averagePercentage >= 70) {
33 |             grade = 'C';
34 |         } else if (averagePercentage >= 60) {
35 |             grade = 'D';
36 |         } else {
37 |             grade = 'F';
38 |         }
39 | 
40 |         // Display results
41 |         System.out.println("\nResults:");
42 |         System.out.println("Total Marks: " + totalMarks);
43 |         System.out.printf("Average Percentage: %.2f%%\n", averagePercentage);
44 |         System.out.println("Grade: " + grade);
45 | 
46 |         // Close the scanner
47 |         scanner.close();
48 |     }
49 | }


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