First of all, thanks for taking the time to look at my post. I’m new to C programming in general, so i need a little help with some homework.

I have to first insert the number of rows and columns, then the elements and show the whole matrix. After that to arrange the columns in a mirror like way. For example,
If the matrix has 2 rows and 5 columns, it should look like this:

Matrix
1 2 3 4 5
6 7 8 9 0
Should become
5 4 3 2 1
0 9 8 7 6

First column changes places with the last. The second with the penultimate and so on.
I wrote half of the code. All i need now is a way to change the columns.
This is what i did so far:

#include 
 
    void main()
    {
    int m, n, i, j, matrix[10][10];
    printf("Insert the number of rows and columns:\n");
    scanf("%d%d", &m, &n);
    printf("Insert the desired elements:\n");
    for (i = 1; i <= m; i++)
        for (j = 1; j <= n; j++)
            scanf("%d", &matrix[i][j]);
    printf("Your matrix has the following elements:\n");
    for (i = 1; i <= m; i++)
    {
      for (j = 1 ; j <= n; j++)
      {
        printf("%d\t", matrix[i][j]);
      }
      printf("\n");
    }
    }