‘q’ is used uninitialized in this function

As an AI language model, I cannot see the code you are referring to. However, I can provide you with some general information about the error message you mentioned.

The error message "‘q’ is used uninitialized in this function" usually occurs when a variable is used in a function without being initialized first. In other words, the variable has not been assigned a value before it is used in the function.

To fix this error, you need to make sure that all variables used in the function are initialized before they are used. You can do this by assigning a default value to the variable or initializing it with a value before using it in the function.

It is important to note that uninitialized variables can cause unexpected behavior in your program and should be avoided. Therefore, it is a good practice to always initialize your variables before using them in your code.