Corrected student management

#include <stdio.h>

#define MAX_NAME_LENGTH 50
#define MAX_STUDENTS 3

typedef enum {
    A,
    B,
    C,
    D,
    F
} Score;

typedef struct {
    char name[MAX_NAME_LENGTH];
    int age;
    Score score;
} Student;

void addStudent(Student students[], int *count) {
    if (*count >= MAX_STUDENTS) {
        printf("Maximum number of students reached.\n");
        return;
    }

    Student newStudent;
    printf("Enter name: ");
    scanf("%s", newStudent.name);
    printf("Enter age: ");
    scanf("%d", &newStudent.age);
    printf("Enter score (A=0, B=1, C=2, D=3, F=4): ");
    scanf("%d", &newStudent.score);
    students[*count] = newStudent;
    (*count)++;

    printf("Student added successfully.\n");
}

void displayStudents(const Student students[], int count) {
    if (count == 0) {
        printf("No students to display.\n");
        return;
    }
    for (int i = 0; i < count; i++) {
        printf("Student %d:\n", i + 1);
        printf("Name: %s\n", students[i].name);
        printf("Age: %d\n", students[i].age);
        printf("Score: %d\n", students[i].score);
        printf("\n");
    }
}

int findHighestScoringStudent(const Student students[], int count) {
    if (count == 0) {
        return -1;
    }

    int highestIndex = 0;
    for (int i = 1; i < count; i++) {
        if (students[i].score > students[highestIndex].score)
            highestIndex = i;
    }
    return highestIndex;
}

int main() {
    Student students[MAX_STUDENTS];
    int choice;
    int count = 0;
    do {
        printf("Menu:\n");
        printf("1. Add Student\n");
        printf("2. Display Students\n");
        printf("3. Find Highest-Scoring Student\n");
        printf("4. Exit\n");
        printf("Enter your choice: ");
        scanf("%d", &choice);

        switch (choice) {
            case 1:
                addStudent(students, &count);
                break;

            case 2:
                displayStudents(students, count);
                break;

            case 3: {
                int highestIndex = findHighestScoringStudent(students, count);
                if (highestIndex == -1) {
                    printf("No students to find the highest-scoring student.\n");
                } else {
                    printf("The highest-scoring student is:\n");
                    printf("Name: %s\n", students[highestIndex].name);
                    printf("Age: %d\n", students[highestIndex].age);
                    printf("Score: %d\n", students[highestIndex].score);
                }
                break;
            }

            case 4:
                printf("Exiting the program. Thank you for using our system!\n");
                break;

            default:
                printf("Invalid choice. Please try again.\n");
                break;
        }
        printf("\n");
    } while (choice != 4);

    return 0;
}