using System; using System.IO; class c1512 { static int Main() { const int size = 12; double [] rainfall = new double[size]; double sum=0.0,average=0.0; int month; string line; FileStream datastream = new FileStream("c:\\document\\csharp\\ptr\\1952.txt", FileMode.OpenOrCreate, FileAccess.Read); StreamReader r = new StreamReader(datastream); for (month=0;month