I have three imaginary numbers, and I need to put them into non-decreasing rows, but I don't know how .

```
    int a, b, c, mak, min, mid;
    a = Convert.ToInt32(tba.Text);
    b = Convert.ToInt32(tbb.Text);
    c = Convert.ToInt32(tbc.Text);
    mak=b;
    if (a > mak)
        a = mak;
    else
        if (c > mak)
            c = mak;
    a=min;
    if (b < min)
        b = min;
    else
        if (c < min)
            c = min;
    c=mid;
    if (a == mak);(a==min)
    a = mid
    if (b == mak) ;(b==min)
    b = mid;
    tbd.Text=Convert.ToString(mid);
    tbg.Text=Convert.ToString(mak);
    tbf.Text=Convert.ToString(min);

```

It says only assignment, call, increment, decrement, and new object expressions can be used as a statement. How can I correct this code to work?