Drawing floor and ceiling functions

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Graph the following functions:

$$: \mathbb{R}\rightarrow \mathbb{R},()=\left\lfloor x\right\rfloor+1$$

$$: \mathbb{R}\rightarrow \mathbb{R},()=2\left\lfloor x\right\rfloor$$

$$ : \mathbb{R} \rightarrow \mathbb{R}, () = \left\lfloor x\right\rfloor + ⌈⌉$$

$$ : \mathbb{R} \rightarrow \mathbb{R}, () = ⌈⌉ − \left\lfloor x\right\rfloor$$

Correct me if I'm wrong, but this is how I think I should go about doing the task:

To graph the function $$: \mathbb{R}\rightarrow \mathbb{R},()=\left\lfloor x\right\rfloor+1$$, you would plot points corresponding to the ordered pairs $(x, \left\lfloor x\right\rfloor+1)$ for various values of $x$. For example, if $x=2.5$, then $\left\lfloor x\right\rfloor+1=3+1=4$, so you would plot the point $(2.5, 4)$. You would continue this process for various values of $x$ to create a graph of the function.

To graph the function $$: \mathbb{R}\rightarrow \mathbb{R},()=2\left\lfloor x\right\rfloor$$, you would plot points corresponding to the ordered pairs $(x, 2\left\lfloor x\right\rfloor)$ for various values of $x$. For example, if $x=2.5$, then $2\left\lfloor x\right\rfloor=2(2)=4$, so you would plot the point $(2.5, 4)$. You would continue this process for various values of $x$ to create a graph of the function.

Etc.