Pt 1420 Unit 10 Homework
Introduction to Programming
Unit 10 Assignment 1
Short Answer
1.
* Open the file – Opening the file creates a connection between the file and a program; this allows the program to read data from the file.
* Process the file – Data is either read from the file or written to the file
* Closing the file – The file must be closed when a program is finished using it. Closing the file disconnects the file from the program.
2. The file must be closed so the program will force any unsaved data in the buffer to be written to the file.
4. The file will not be erased, and any new data will be written at the end of the file’s current contents. 5. The program will create a new file.
Algorithm Workbench
1.
Declare OutputFile myFile
Open myFile “my_name.dat”
Write myFile “fatima”
Close myFile
2.
Declare InputFile myFile
Declare String name1
Open myFile “my_name.dat”
Read myFile name1
Close myFile
Display ”Hello! My name is,”
3. Declare OutputFile numberList
Declare Integer counter = 1
Open numberList “number_list.dat”
For counter = 1 to 100
Write numberList, counter
Next counter
End For
Close numberList
4.
Declare InputFile number_list
Declare Integer myNumber
Open number_list ”number_list.dat"
Display "Here are the numbers: "
While NOT eof (number_list)
Read numberList myNumber
Display myNumber
End While
Close myName
Programming Exercise Pg. 410
1.
Declare Integer number
Declare InputFile numberFile
Open numberFile “numbers.dat”
Display “Here are the numbers: “
While NOT eof(numberFile)
Read numberFile (number)
Display number
End While
Close numberFile
2.
Declare String name
Declare Integer counter = 0
Declare InputFile nameFile
Open nameFile (names.dat”)
While NOT eof(nameFile)
Read nameFile name
Set counter = counter + 1
End While
Close nameFile
Display “The number of names in the file is “, counter