Description: For 2006 more than 80 cities nationwide daily air quality status query, sort, and other operations. Including urban air quality status object code, city name, the primary pollutant, pollution index, pollutant levels, air condition, year, month, day general queries, statistical inquiry, sorting query three kinds of queries
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File list (Check if you may need any files):
data.txt
TestData.txt
空气质量查询.cpp
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