Practice Library Functions (4.2.1) - Functions - ICSE 10 Computer Applications

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6 sample questions

Question 1.
Name a common library function in Java.
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Think about functions that help with output and math.
Question 2.
What does System.out.println() do?
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It’s often used to display messages.
3Question 3.
What is a library function?
- A function that is user-defined
- A function that is predefined by the language
- A function that requires no parameters
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Remember, these functions are available without needing to write them yourself.
4Question 4.
True or False: Library functions can only be used once in a program.
- True
- False
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Think about the benefits of reusing code.
Question 5.
Create a function that utilizes a library function to convert temperature from Celsius to Fahrenheit using conversion formula. Output the result.
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Find the formula for temperature conversion.
Question 6.
Design a small application that takes user input, converts it to an integer using Integer.parseInt(), and outputs the result.
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Remember to import necessary libraries and handle possible errors.

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