ATLANTA (AP) _ NCR Corp. (NCR) on Tuesday reported a first-quarter loss of $34 million, after reporting a profit in the same period a year earlier.On a per-share basis, the Atlanta-based company said it had a loss of 28 cents. Earnings, adjusted for costs related to mergers and acquisitions and restructuring costs, came to 33 cents per share. The results fell short of Wall Street expectations. The average estimate of four analysts surveyed by Zacks Investment Research was for earnings of 64 cents per share.