Lab 8.1-File Access and Pseudocode Critical Review When a program needs to save data for later use, it writes the data in a file. The data can be read from the file at a later time Three things must happen in order to work with a file. 1) Open a file. 2) Process the file. 3) Close the file An internal file must be created for an output file or input file, such as Declare OutputFile myFile //to write out Declare InputFile myFile //to read in A data file must also be created to store the output, such as Open myEile "thedata.txt" New keywords and syntax include the following Open [InternalName EileNamel Write [InternalName] String or Data] Read [InternalNamel Datal Close InternalName] AppendMode /used with Open when need to append Loops are used to process the data in a file. For example For counter = 1 to 5 Display "Enter a number:" Input number Write myFile number End For When reading information from a file and it is unknown how many items there are, use the eof function. For example While NoT eof (myFile) Read myFile number Display number End While