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Important Introduction to Programming Short Questions

Chapter: 38
Question 1:
How does a static variable in a function behave across multiple function calls?
Answer: It retains its value between calls, as it is only initialized once and its value persists throughout the program's execution.
Chapter: 38
Question 2:
How do static variables differ from dynamic variables?
Answer: Static variables are allocated in the static memory area and exist for the duration of the program, while dynamic variables are allocated on the heap and managed explicitly.
Chapter: 38
Question 3:
How is a static integer variable initialized in a function?
Answer: It is initialized only once when the function is first called, and its initialization persists across multiple function calls.
Chapter: 38
Question 4:
What will be the output of staticVarFun() if called in a loop 10 times?
Answer: The output will be incremented values from 1 to 10, demonstrating that the static variable retains its value between calls.
Chapter: 38
Question 5:
What will be the output of nonstaticVarFun() if called in a loop 10 times?
Answer: The output will be 1 printed 10 times, as the automatic variable is reinitialized to 0 with each function call.
Chapter: 38
Question 6:
Why should constructors for static objects have default arguments?
Answer: To ensure that static objects can be properly initialized when created, even if no arguments are provided.
Chapter: 38
Question 7:
When is a static data member of a class initialized?
Answer: It is initialized once, at file scope outside of the class definition, and persists for the lifetime of the program.
Chapter: 38
Question 8:
How can you initialize a static data member of a class?
Answer: Using the scope resolution operator, e.g., ClassName::staticMember = value; outside the class definition.
Chapter: 38
Question 9:
What is a potential issue with manipulating a static data member via an object?
Answer: Modifying a static data member through an object affects all instances of the class, as there is only one copy of the static data member shared among all objects.
Chapter: 38
Question 10:
How does the destructor of a static object differ from that of an automatic object?
Answer: The destructor of a static object is called when the program ends, while the destructor of an automatic object is called when the function containing it exits.