If a variable is not initialized, it stores which type of data?
Correct answer: A. Zero
- A. Zero
- B. Garbage
- C. 1
- D. Nothing
Explanation
In C programming, when a variable is declared but not explicitly assigned a value (initialized), its behavior is generally undefined. This means the value the variable holds can be anything, but it's commonly assumed to contain a zero or some leftover data from previous program execution.While some compilers might initialize uninitialized variables to zero, it's not guaranteed or reliable across different systems. As a good programming practice, it's essential to always initialize variables before using them to avoid unpredictable behavior in your code. Always initialize your variables to avoid uncertainty and potential errors in your C programs.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Programming Basics
Programming basics covers algorithms, flowcharts, pseudocode, variables, constants, data types, operators, input and output, conditional statements and loops. It also introduces functions, arrays, strings, debugging and common programming errors, with attention to the difference between syntax errors, runtime errors and logical errors in a program.
Practise Programming Basics
183 free Programming Basics MCQs from Computer Science and IT, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Computer Science and IT questions like this
Computer Science and IT is on 85 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Programming Basics questions
The variables are created in which of the following?
What is the output of the expression a = 5*05?
How many types of comments are there in the C language?
What is the first character of a variable name allowed to be in C programming?
How many bytes does a character type variable occupy in memory?
How many bytes does an unsigned long data type occupy?