After graduating with an Electrical Engineering degree, I found it very difficult to even be acknowledged by a company. At Seagate, however, I almost immediately received an interview request after submitting my resume via their online application process. My interview was scheduled at 9 am. When I showed up, they put me in a small meeting room. A specific group within the Firmware Engineers (Optimization) was interested in expanding, so I met with each of the senior firmware engineers that were in the group. Each person took about 20 minutes and asked relatively simple questions.

The last person to come in was the manager of the group. He spent about an hour talking to me about my background, and then he asked me to solve C code problems that he wrote on the blackboard.

How could the following be refactored to reduce the amount of memory used by this C code?

c int nFirstOne = 1, nSecondOne = 2; int nTemp = nFirstOne; nFirstOne = nSecondOne; nSecondOne = nTemp;