Jamia Millia Islamia MCA C Programming Language Previous Year Questions (PYQs) – Page 5 of 5
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Which bitwise operator is suitable for turning off a particular bit in a number?
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Solution
Use bitwise AND with a mask having 0 at that bit.
Consider the following lists, and then select the correct option after matching them.
$\begin{array}{|c|l|c|l|}
\hline
\textbf{List–I} & & \textbf{List–II} & \\ \hline
1. & \text{Procedural Oriented Language} & P. & \text{COBOL} \\ \hline
2. & \text{Object Oriented Language} & Q. & \text{HTML} \\ \hline
3. & \text{Business Oriented Language} & R. & \text{C++} \\ \hline
4. & \text{Web Page} & S. & \text{Pascal} \\ \hline
\end{array}$
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Solution
Procedural Oriented → Pascal $(1,S)$
Object Oriented → C++ $(2,R)$
Business Oriented → COBOL $(3,P)$
Web Page → HTML $(4,Q)$
Correct match: $(1,S), (2,R), (3,P), (4,Q)$
The C programming language uses which of the following data types to store real numbers?
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Solution
Real numbers (decimal values) are stored using floating-point data types such as float or double. In MCQ context, the expected answer is float.
Which of the following is NOT a valid operator in C?
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Solution
+, &, and % are valid operators in C.
# is not an operator; it is used in preprocessor directives like #include and #define.
The operator "&&" in C represents:
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Solution
&& performs logical AND between two conditions and returns true only if both conditions are true.
Which of the following is NOT a valid C language function prototype?
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Solution
Standard C specifies main should return int, so void main() is not considered a proper function prototype.
In C programming, which function is used to open a file for reading?
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Solution
The function fopen() is used to open a file.
Which of the following is a correct form of a function declaration in C?
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Solution
A function declaration must include the return type and function name.
Which function is used to find the length of a string in C?
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Solution
The strlen() function in the string.h library returns the length of a string excluding the null character.
Example:
strlen("hello") = 5
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