Programming Logic/Looping
Looping is when a certain order of commands are repeated (endlessly or a certain number of times or until something else happens)
Endless loops
[edit | edit source]For this case, the code is executed forever. This is dangerous. This can happen if a counter variable is not incremented, or if the condition is always true and the loop will therefore never stop.
Example:
{
Step forward
Repeat
}
The roboter would endlessly walk forward
Loops repeated a certain number of times
[edit | edit source]For this case, some kind of counter is used to keep track of how many iterations of the loop have been executed.
Example:
{
step forward
repeat 10 times
}
The roboter would take 10 steps and then stop.
Conditional loops
[edit | edit source]In this case, the code is executed and operations performed either while a certain condition is true, or until a certain condition becomes true.
Example:
{
step forward
repeat until you are in front of wall
}
In this case the roboter would walk forward until it is in front of a wall. It would not matter how far away it is (that means you don't have to re-program the robot when you have another distance). Then it would continue the program.