McDonald’s Corp. is expected to report third-quarter earnings on Friday before the market opens.McDonald’s got a boost from the introduction of all-day breakfast back in October 2015, but there are questions now whether it can sustain results over the long term. Other issues, including Brexit, could also stifle earnings. Earnings: Analysts surveyed by FactSet expect earnings per share of $1.48, up from $1.40 for the same period last year.Analysts polled by Estimize, a software platform that crowdsources estimates from buy-side analysts, hedge-fund managers, academics and others, is expecting $1.50 per share. Revenue: Analysts polled by FactSet expect revenue of $6.28 billion, down from $6.62 billion for the same period last year.Analysts polled by Estimize expect revenue of $6.3 billion.What do you expect? Will profit be more than $1.48?