If the interviewing position has specific [[programming language]] requirements, the candidate is expected to know those languages and solve the questions with it. If the interview is for general programming or development position, a thorough knowledge of one mainstream language such as [[C (programming language)|C]], [[C++]], [[C Sharp (programming language)|C#]], or [[Java (programming language)|Java]] may be enough to get by.{{Citation needed|date=February 2011}} An interviewer may also allow use of other popular languages, such as [[JavaScript]], [[PHP]], or [[Perl]].
===Dress code===
The dress code for an on-site programming interview is usually reflected by what other people wear at the company. These days, most companies in the software industry allow [[business casual]] at work. Therefore, unless it is asked or the interviewing position has a significant business or consulting aspect whereby formal dress will be needed, a suit may be overkill for a programming interview. It is advised to dress professionally and appear clean and tidy since it gives the first impression of the candidates. If the information about the dress code of a target company is given or can be found, wear accordingly. Women are advised to avoid heavy jewelry.<ref>{{Cite web |url=http://advice.cio.com/meridith_levinson/what_to_wear_for_an_it_job_interview?page=0%2C0 |title=cio.com |access-date=January 1, 2020 |archive-url=https://web.archive.org/web/20120311120811/http://advice.cio.com/meridith_levinson/what_to_wear_for_an_it_job_interview?page=0,0 |archive-date=March 11, 2012 |url-status=dead }}</ref>
