Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Write a program that allows the user to navigate the lines of text
in a file. The program should prompt the user for a filename and
input the lines of text into a list. The program then enters a loop
in which it prints the number of lines in the file and prompts the
user for a line number. Actual line numbers range from 1 to the
number of lines in the file. If the input is 0, the program quits.
Otherwise, the program prints the line associated with that
number.
An example file and the program input and output is shown
below:
example.txt
Line 1.
Line 2.
Line 3.
Enter the input file name: example.txt
The file has 3 lines.
Enter a line number [0 to quit]: 2
2 :
Line 2.
The file has 3 lines.
Enter a line number [0 to quit]: 4
ERROR: line number must be less than 3.
The file has 3 lines.
Enter a line number [0 to quit]: 0
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Transcribed Image Text:Write a program that allows the user to navigate the lines of text in a file. The program should prompt the user for a filename and input the lines of text into a list. The program then enters a loop in which it prints the number of lines in the file and prompts the user for a line number. Actual line numbers range from 1 to the number of lines in the file. If the input is 0, the program quits. Otherwise, the program prints the line associated with that number. An example file and the program input and output is shown below: example.txt Line 1. Line 2. Line 3. Enter the input file name: example.txt The file has 3 lines. Enter a line number [0 to quit]: 2 2 : Line 2. The file has 3 lines. Enter a line number [0 to quit]: 4 ERROR: line number must be less than 3. The file has 3 lines. Enter a line number [0 to quit]: 0
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