Short array decending order

#include <stdio.h>

int main()
{

    int number[30];
    int i, j, a, n;

    printf("Enter the value of N\n");
    scanf("%d", &n);
    printf("Enter the numbers \n");

    for (i = 0; i < n; ++i)
    {
        scanf("%d", &number[i]);
    }

    //  sorting begins
    for (i = 0; i < n; ++i)
    {
        for (j = i + 1; j < n; ++j)
        {
            if (number[i] < number[j])
            {
                a = number[i];
                number[i] = number[j];
                number[j] = a;
            }
        }
    }

    printf("The numbers arranged in descending order are given below\n");

    for (i = 0; i < n; ++i)
    {
        printf("%d\n", number[i]);
    }
    return 0;
}

Output :

Enter the value of N
5
Enter the numbers
4 7 2 3 1
The numbers arranged in descending order are given below
7
4
3
2
1