Free Programming Basics MCQs with Answers

• A. 2
• B. 3
• C. 4
• D. 5

Explanation: The correct answer is (a), 2.In C language, there are two main types of comments:Single-line comments: These comments start with "//" and…

• A. 2
• B. 2.5
• C. 3
• D. None of these

Explanation: The correct answer is (c) 3.In C programming, when you multiply an integer by a number ending in zero (like 05), the trailing zero is…

• A. ROM
• B. RAM
• C. Cache
• D. Register

Explanation: These are small, very fast memory locations within the CPU that hold operands (data) and results used in calculations or instructions.

• 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.

• A. Letter
• B. Under score (_)
• C. Digit (0-9)
• D. Both (a) and (b)

Explanation: The correct answer is: (d) Both (a) and (b). In C programming, the first character of a variable name can be either a letter (uppercase or…

• A. 2
• B. 1
• C. 4
• D. 8

Explanation: In most C programming environments, a character type variable typically occupies 1 byte of memory.

• A. 1 byte
• B. 2 bytes
• C. .4 bytes
• D. 8 bytes

Explanation: An unsigned long data type typically occupies 4 bytes in memory. This can vary depending on the specific system architecture, but 4 bytes…

• A. Arithmetic overflow
• B. Arithmetic underflow
• C. Truncation
• D. Round off

Explanation: Arithmetic underflow is the phenomenon you are looking for. It happens when the result of a calculation is very small, smaller than the…

• A. int
• B. new
• C. malloc
• D. calloc

Explanation: This function is a standard library function in C used to dynamically allocate a block of memory with a specified size.

• A. float age = 22.5;
• B. int age = 22.5;
• C. double price = 10.99;
• D. All of the above

Explanation: The correct answer is: (d) All of the above. In conclusion, all three options are acceptable ways to declare floating-point variables in…

• A. Assignment operator
• B. comparison operator
• C. Ternary operator

Explanation: In programming languages, the equal sign (=) is most commonly used as an assignment operator.

• A. #include
• B. Int
• C. void
• D. return

Explanation: The correct answer is (a) #include. #include is a preprocessor directive in C.

• A. // This is a comment
• B. / This is a comment /
• C. 'This is a comment'
• D. ! This is a comment

Explanation: The correct answer is: (a) // This is a comment. In C programming, a single-line comment starts with two forward slash characters (//) and…

• A. 5
• B. 6
• C. 8
• D. 9

Explanation: The correct option is (d), 9.There are nine basic arithmetic operators in most programming languages:Addition (+): Adds two operands…

• A. =
• B. !
• C. AND
• D. ||

Explanation: The correct answer is (a) =. = is an assignment operator in C. It is used to assign a value to a variable.

• A. Assignment operator
• B. Unary operator
• C. Ternary operator
• D. Binary operator

Explanation: The correct answer is: (b) Unary operator. Decrement operator (--) is a unary operator that subtracts 1 from the value of its operand (the…

• A. Binary operator
• B. Unary operator
• C. Bitwise operator

Explanation: The logical NOT operator (!) is indeed a binary operator in C. However, this answer choice seems to be a mistake in the image you sent.

• A. Assignment Operator
• B. Binary Operator
• C. Unary Operators
• D. Ternary Operator

Explanation: Unary operators only require one operand. They are used to perform operations on a single value.

• A. Preprocessor
• B. Functions
• C. Assignment (not shown in the options list but relevant to readability)
• D. Comments
• E. all of the above

Explanation: (d) Comments and all of the above (e) .In conclusion, all of the above options (comments, functions, and meaningful variable names) can be…

• A. +
• B. -
• C. %
• D. >

Explanation: > is the greater than operator. This is a relational operator, which is used to compare the values of two operands.