$1\mathrm{.}8$ zyLab training: Interleaved input $/$ output

Auto$-$graded programming assignments have numerous advantages, but have some challenges too. Students commonly struggle with realizing that example input $/$ output provided in an assignment's specification interleaves input and output, but the program should only output the output parts. If a program should double its input, an instructor might provide this example:

Enter x:

$5$

x doubled is: $10$

Students often incorrectly create a program that outputs the $5.$ Instead, the program should only output the output parts:

Enter x:

x doubled is: $10$