The While cycle of the Zhong Ming robot express train can use counters to limit the number of while cycles, for example:

1、Copycount=0whilecount2、

3. In the above code, the count variable is used for counting, with an initial value of 0. Every time a loop is executed, 1 is added, and when the value of count reaches 5, the loop will stop.

2、

3. You can modify the initial value and limit conditions of the counter as needed. A while loop is a loop structure that repeatedly executes a piece of code until the specified conditions are no longer met.