Remove white space at the end of the output in C

Question

The following code is for printing the elements of a matrix in spiral order. The program works fine. The problem, however, is that the online compiler against which I\'m checkin

Answer 1

the printf() statement,

 printf("%d ", a[k][i]);

results in extra space. use

"%d" without space or use space in the begining as,

" %d"

then at the end there wont be a extra space.
its about how you use space in your printf(). use space in a way that extra space is not present at the end as you wanted.
You can use code like this,

while (k < m && l < n)
    {
        for (i = l; i < n; ++i)
        {
            if(l==0&&i==0)
            {
              printf("%d", a[k][i]);
            }
            else
              printf(" %d", a[k][i]);
        }
        k++;
        for (i = k; i < m; ++i)
            printf(" %d", a[i][n-1]);
        n--;
        if ( k < m)
        {
            for (i = n-1; i >= l; --i)
                printf(" %d", a[m-1][i]);
            m--;
        }
        if (l < n)
        {
            for (i = m-1; i >= k; --i)
                printf(" %d", a[i][l]);
            l++;
        }