diff --git a/Q4.c b/Q4.c
index 8c39f12..0fc3cc5 100644
--- a/Q4.c
+++ b/Q4.c
@@ -1,56 +1,63 @@
 #include <stdio.h>
 //Question 4
+
+// Finds average value of array
 double find_average(const int arr[], int len) {
-    double sum = 0.0;
-    for(int i = 0; i < len; i++) {
-        sum += arr[i];
-    }
-    return sum/len;
+	double sum = 0.0;
+	for(int i = 0; i < len; i++) {
+		sum += arr[i];
+	}
+	return sum/len;
 }
+
 // Returns the INDEX of the highest value in array
 int find_index_highest(const double arr[], int len) {
-    double highest = arr[0];
-    int index_highest = 0;
+	double highest = arr[0];
+	int index_highest = 0;
 
-    for(int i = 0; i < len; i++) {
-        if(arr[i] > highest) {
-            highest = arr[i];
-            index_highest = i;
-        }
-    }
-    return index_highest;
+	for(int i = 0; i < len; i++) {
+		if(arr[i] > highest) {
+			highest = arr[i];
+			index_highest = i;
+		}
+	}
+	return index_highest;
 }
 
 int main() {
-    int num_students, num_subjects;
-    printf("Enter number of students: ");
-    scanf("%d", &num_students);
-    printf("Enter number of subjects: ");
-    scanf("%d", &num_subjects);
+	// To test the functions
+	int num_students, num_subjects;
+	printf("Enter number of students: ");
+	scanf("%d", &num_students);
+	printf("Enter number of subjects: ");
+	scanf("%d", &num_subjects);
 
-    int grade_matrix[num_students][num_subjects];
-    for(int i = 0; i < num_students; i++) {
-        printf("Enter student %d's grades: ", i+1);
-        for(int j = 0; j < num_subjects; j++) {
-            scanf("%d", &grade_matrix[i][j]);
-        }
-        printf("\n");
-    }
+	// Create matrix of grades and use input to assign its values
+	int grade_matrix[num_students][num_subjects];
+	for(int i = 0; i < num_students; i++) {
+		printf("Enter student %d's grades: ", i+1);
+		for(int j = 0; j < num_subjects; j++) {
+			scanf("%d", &grade_matrix[i][j]);
+		}
+		printf("\n");
+	}
 
-    double average_grades[num_students];
-    printf("Average Grades:\n");
-    for(int i = 0; i < num_students; i++) {
-        average_grades[i] = find_average(grade_matrix[i], num_subjects);
-        printf("Student %d: %0.02f\n", i+1, average_grades[i]);
-    }
+	// Array to hold average grades of students
+	double average_grades[num_students];
+	// Print every students average grades
+	printf("Average Grades:\n");
+	for(int i = 0; i < num_students; i++) {
+		average_grades[i] = find_average(grade_matrix[i], num_subjects);
+		printf("Student %d: %0.02f\n", i+1, average_grades[i]); // Formatted to two decimal places
+	}
 
-    printf("Student with Highest Average: Student %d\n", (find_index_highest(average_grades, num_students) +1));
+	printf("Student with Highest Average: Student %d\n", (find_index_highest(average_grades, num_students) +1));
 
-    printf("Students with average >= 75:\n");
-    for(int i = 0; i < num_students; i++) {
-        if(average_grades[i] >= 75.0)
-            printf("Student %d\n", i+1);
-    }
+	printf("Students with average >= 75:\n");
+	for(int i = 0; i < num_students; i++) {
+		if(average_grades[i] >= 75.0)
+			printf("Student %d\n", i+1);
+	}
 
-    return 0;
+	return 0;
 }