That's a reasonable guess, but a return would work there. I think I did it this way because all the breaks you need in a switch are noisy -- too noisy if you'd like to write one action per line. However, you can mute the noise by lining it up:

        switch (getchar ()) {
            break; case ' ': enter_text ();
            break; case 'f': view = formulas;
            break; case 'h': col = (col == 0 ? 0 : col-1);

which also makes oops-I-forgot-the-break hard to miss. I hadn't thought of that pattern yet. (You could define a macro for "break; case" too; my friend Kragen calls that IF.)

But I mostly stopped coding in C after around this time.