7.2 - Data Types and Variables
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Practice Questions
Test your understanding with targeted questions
What is a variable?
💡 Hint: Think about storage spaces in a program.
Name one primitive data type.
💡 Hint: Remember the types that hold simple data.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the size of an int data type in Java?
💡 Hint: Think about how many bits in common integer types.
True or False: A variable can hold only one data type during its lifetime.
💡 Hint: Remember the rules of variable declaration.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
Imagine you're storing information for a school. Create a variable for a student's name using a string and a variable for their age using an integer. Provide the declarations.
💡 Hint: Remember to use the correct data types for names and ages.
Consider a scenario where you need to store a high-precision measurement, like the temperature of a chemical reaction. Which data type would you choose to declare this variable and why?
💡 Hint: Reflect on types that can store decimal values.
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