#include <stdio.h>
#include <stdlib.h>
#pragma warning(disable:4996)

double grades[] = { 5.50,3.57,4.20,5.80,6.00,4.50,2.00,5.00,6.00,3.80 };

double* arrayCapasityAndIni(int len) {
    double* arr2 = (double*)malloc(len * sizeof(double));
    int i;

    for (i = 0; i < len; i++) {
        arr2[i] = grades[i];
    }

    return arr2;
}
int gradesNumbers() {
    int n;

    do {
        printf("Numbers: ");
        scanf("%d", &n);
        if (n > 10 || n < 0) {
            printf("Enter number between 0 and 10");
        }
        if (n == 0) {
            return 0;
        }
    } while (n < 0 || n>10);

    return n;
}

double* newCapasity(double arr[], int len, int newLen) {
    double* arr2 = (double*)realloc(arr, (newLen) * sizeof(double));

    if (arr2 == NULL) {
        printf("Error recapasity");
        exit(1);
    }
    int i;

    for (int i = 0; i < len; i++)
    {
        arr2[i] = arr[i];
    }

    for (i = len; i < (newLen); i++) {
        arr[i] = 2.00;
    }

    return arr2;
}

int main()
{
    int newGrades;
    int grades = gradesNumbers();
    int i;
    double* arr = arrayCapasityAndIni(grades);

    for (i = 0; i < grades; i++) {
        printf("arr[%d]: %.2f\n", i + 1, arr[i]);
    }

    printf("New grades: ");
    scanf("%d", &newGrades);

    double* newArr = newCapasity(arr, grades, newGrades);

    for (i = 0; i < newGrades; i++) {
        printf("arr[%d]: %.2f\n", i + 1, newArr[i]);
    }

    free(arr);
    return 0;
}