Is going to graduate school the same place I went to undergrad okay? Is it okay to get my bachelor's and master's degrees at the same school?  I intend to go into industry in computer science.

OK = will not substantially harm future prospects.

Getting a doctoral degree is not planned.

Edit: I might need to take out loans to go to a different school.
Hiring managers in industry will care more about the reputation of your master's degree than about where you earned your bachelor's degree.

If your undergraduate degree is from a medium-to-small school, you will probably have the same professors if you take your master's there.  In other words, you will have learned much of what they have to teach you when you finish your undergraduate degree.  So, for maximum learning, consider a master's from a different school that has a good reputation in industry.