Podcast
Questions and Answers
What is the output of the following C code?
What is the output of the following C code?
- 12 (correct)
- 11
- 13
- 10
Which data type in C language is used to store a wide character?
Which data type in C language is used to store a wide character?
- double
- int
- float
- wchar_t (correct)
In the context of C programming, what is the purpose of the 'volatile' keyword?
In the context of C programming, what is the purpose of the 'volatile' keyword?
- To define a variable that can be modified by an external process (correct)
- To define a variable that cannot be modified by the program itself
- To ensure that the variable is always read from memory rather than from a register
- To specify that the variable is a constant
Flashcards
What is a wide character in C?
What is a wide character in C?
The wchar_t data type in C is used to store wide characters, which allows for characters beyond the standard ASCII set, including characters from other languages.
Volatile Keyword in C
Volatile Keyword in C
The volatile keyword in C is used to signal to the compiler that a variable's value can be modified by an external factor, like a hardware interrupt or a separate thread, outside the normal execution flow.
Why is 'volatile' important?
Why is 'volatile' important?
In C, the volatile keyword effectively instructs the compiler not to optimize away accesses to the variable. This is crucial to ensure that the variable's value is always fetched from memory whenever it is used.
