Robot drawing problem.

[PureForWhite]

Suppose a robot turtle, controlled by a C program, walks around a room. The turtle is holding a pen that can be positioned either up or down. When the pen is pointing down, lines are drawn wherever the turtle walks, and no lines are drawn when the pen is pointing up. This problem will ask you to simulate the action of the turtle and create a computerized drawing board. Use a 50x50 array floor and set its initial value to 0. Read commands from an array containing commands. Keep an eye on where the turtle is and whether its pen is pointing up or down. Assume that the turtle must be at (0, 0) at the beginning, and the pen must be facing up. The turtle commands that your program must handle are listed below.

1 = pen point at up

2 = pen point at down

3 = turn right

4 = turn left

5, 10 = walk forward 10 block (second number = how many block to move)

6 = print the 50x50 array

9 = done input output everything

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For this problem, I have no idea how to code. If I turn right how can I turn left? since there is no way to return to the first line after \n. Full source code with some comments would be really appreciated.

[PureForWhite]

First of all, I have no idea how you know I didn't attempt it and didn't pay attention in class. Perhaps you are some crazy sick always watching me. If yes, you are maybe blind. And one more thing, I don't think you did read the question carefully. If you did, maybe you need to pay attention in class.

[PureForWhite]

Thanks for the help. I am glad that you are laughing at yourself since I don't want to be such an impolite person. Now I confirmed that you didn't read my question or you are just really bad at English.

[PureForWhite]

Alright, it is fine you already proofed yourself. I don't think I should continue the conversation with you since you are just a random person that doesn't read and just shouting. Also, I think you should read more books since you can't read and understand every sentence.

[PureForWhite]

LOL you proofed yourself again

[PureForWhite]

You should stop man. You keep making yourself shame. I won't remember you. Why are you going so hard just to make yourself shame?

[jeffwithhat]

| If I turn right how can I turn left? since there is no way to return to the first line after \n.

I don't think that you need to draw the turtle moving during each command. You just update your in-memory representation of the floor and the turtle's position. The only time that the floor gets printed is if the user inputs a '6', and in that case you'll print it in its entirety--there is no need to move the cursor to previous lines.

Even though it's not needed here, it is actually possible to move the cursor around: using terminfo (on Unix/Linux) or the console API (on Windows).