Podcast
Questions and Answers
What is the correct syntax to redirect the output from the program app into a file named output.txt?
What is the correct syntax to redirect the output from the program app into a file named output.txt?
- cat output.txt | app
- app > output.txt (correct)
- app | output.txt
- app < output.txt
Which command is used to display the contents of a file?
Which command is used to display the contents of a file?
- ls content.txt
- touch content.txt
- mkdir content.txt
- cat content.txt (correct)
What is the purpose of the touch command?
What is the purpose of the touch command?
- To delete a file
- To create a new file (correct)
- To rename a file
- To create a new directory
Which command is used to run unit tests?
Which command is used to run unit tests?
When should cin be used?
When should cin be used?
What is the purpose of cin.ignore()?
What is the purpose of cin.ignore()?
What operation is performed by the expression a / b when a and b are integers?
What operation is performed by the expression a / b when a and b are integers?
What is the purpose of mkdir command?
What is the purpose of mkdir command?
Flashcards
Output redirection syntax
Output redirection syntax
Directs the output from a program into a specified file instead of the terminal.
cat command
cat command
Displays the contents of a text file on the terminal.
touch command
touch command
Creates a new, empty file in the current directory.
make test command
make test command
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Purpose of cin.ignore()
Purpose of cin.ignore()
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Integer division (a / b)
Integer division (a / b)
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mkdir command
mkdir command
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Study Notes
University of California, Merced - CSE 22: Introduction to Programming Midterm Examination
- The exam consists of 7 multiple-choice questions.
- The exam is a closed book exam, and no notes or electronic devices are allowed.
- The exam duration is 1 hour and 15 minutes.
- Students must write their first and last name and UC Merced email on the Scantron and Exam Booklet.
Redirecting Output
- The command
app > output.txtredirects the output from the program app into a file named output.txt.
Printing File Contents
- The command
cat content.txtprints the contents of the file content.txt to the console.
Creating a File
- The command
touch content.txtcreates the file content.txt.
Running Unit Tests
- The command
make testruns the unit tests.
Input Streams
cinshould be used to ask the user to input a number or a single word string.cinshould not be used to ask the user to input a multi-word string.
Clearing Input Buffer
cin.ignore()should be used to clear the input buffer when usingcinaftergetline.cin.ignore()should not be used every timecinis used or every timegetlineis used.
Integer Division
- The correct answer for the integer division question is not provided in the given text.
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