MCQ Bank

A matrix is represented as a collection of elements arranged in rows and columns, which corresponds to a two-dimensional array. In programming languages like C and C++, matrices are commonly implemented using 2D arrays.

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Q22

A programmer can ________ the simple matrix class to handle the integer, float, or double data type as elements of the given matrix.

A) Hide
B)
C)
D)

AI Explanation

The programmer can hide implementation details of a matrix class by using abstraction and encapsulation techniques. However, the wording of the question is incomplete and the available option is the closest match.

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Q23

in C and C++ language, every expression has a ________ of its own?

A) Value
B)
C)
D)

AI Explanation

Every expression in C and C++ evaluates to a value, which may be stored, displayed, or used in further computations. The value depends on the operators and operands involved in the expression.

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Q24

The cycle of testing and ________ continues until the program is working perfectly without any problem.

A) Bug fixing
B)
C)
D)

AI Explanation

Software development involves repeated cycles of testing and bug fixing until the program functions correctly. This process helps identify and remove errors from the program.

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Q25

Default scope for members of structures is ________ and default visibility for class members is ________

A) Public, Private
B)
C)
D)

AI Explanation

Members of structures in C++ are public by default, while members of classes are private by default. This difference is a key distinction between struct and class in C++.

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Q26

If A and B are two matrices of order M*N to be added then their resultant matrix will have an order of

A) M*N
B)
C)
D)

AI Explanation

When two matrices of the same order MN are added, the resulting matrix has the same number of rows and columns. Therefore, the resultant matrix will also have order M*N.

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Q27

if m is a matrix object, then self-assignment can be avoided by using following code statement

A) If (&m!=this);
B)
C)
D)

AI Explanation

Self-assignment occurs when an object is assigned to itself. Comparing the object's address with this pointer helps avoid unnecessary operations during assignment.

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Q28

Which of the following is correct format of template function?

A) Template <class T>
B)
C)
D)

AI Explanation

The correct syntax for declaring a template function in C++ begins with the template keyword followed by a template parameter declaration. 'template <class T>' is a valid format.

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Q29

In template class, compiler makes a copy of ________ and convert in to ________

A) Source code, Object code
B)
C)
D)

AI Explanation

For a template class, the compiler generates code from the template source and converts it into the corresponding object code for the required data types. This allows templates to work with different data types.

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Q30

For a matrix, the variables of Rows and Columns should always be a ________

A) Whole Number
B)
C)
D)

AI Explanation

The number of rows and columns in a matrix must be whole numbers because they represent counts of elements. Fractional or negative values cannot define matrix dimensions.

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Q31

After implementation of code is completed, we do its ________ to verify that it is behaving properly in all scenarios.

A) Testing
B)
C)
D)

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Q32

which three constructs do we need to solve any problem?

A) Classes, structures, functions
B)
C)
D)

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Q33

Declaration and definition of a template function should be in the ________ file

A) same
B)
C)
D)

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Q34

For template function, we must have at least ________ generic argument.

A) One
B)
C)
D)

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Q35

In C++, which of the following option has the correct meaning of the expression "a<=b"?

A) a is less than or equal to b
B)
C)
D)

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Q36

What will be the output of the following code? int x=15; int y=10; int z=5; cout<< x*x-4*y*z;

A) 25
B)
C)
D)

AI Explanation

The expression is evaluated as xx - 4yz. Substituting the values gives 1515 - 4105 = 225 - 200 = 25.

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Q37

Which of the following expression is correct in C/C++ language?

A) X=X+3
B)
C)
D)

AI Explanation

The expression X=X+3 is a valid assignment statement in C/C++. It adds 3 to the current value of X and stores the result back in X.

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Q38

Which of the following C++ statement is used to take input from the user?

A) cin
B)
C)
D)

AI Explanation

The cin statement in C++ is used to take input from the user through the standard input stream. It is commonly used with the extraction operator (>>).

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Q39

Which of the following is an example of logical operator?

A) &&, ||
B)
C)
D)

AI Explanation

The operators && (logical AND) and || (logical OR) are examples of logical operators in C/C++. They are used to combine or evaluate Boolean expressions.

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Q40

in C/C++, which of the following data type is used to store real numbers?

A) Float
B)
C)
D)

AI Explanation

The float data type is used in C/C++ to store real numbers containing decimal values. It provides single-precision floating-point representation.