Programming Fundamentals in C++

What is a variable in C++?

• A variable in C++ is a function that performs calculations.

• A variable in C++ is a constant value that never changes.

• A variable in C++ is a named storage location that can hold a value of a particular data type.

• A variable in C++ is a reserved keyword used for loops.

Explain the difference between the = and == operators in C++.

• The = operator is for comparison, while the == operator is for assignment.

• The = operator is for assignment, while the == operator is for comparison.

• The = operator is used for bitwise operations, while the == operator is for logical operations.

• The = operator is used for incrementing values, while the == operator is for decrementing values.

What is the modulus operator (%) used for in C++?

• It divides two numbers

• It multiplies two numbers

• It concatenates two strings

• It returns the remainder of the division of two numbers.

How do you declare a constant variable in C++?

• const myConstant = 5;

• constant int myConstant = 5;

• const int myConstant = 5;

• int myConstant = 5;

What is the increment (++) and decrement (--) operator used for in C++?

• They are used to concatenate strings in C++.

• They are used to increment and decrement the value of variables in C++.

• They are used to multiply and divide variables in C++.

• They are used to compare variables in C++.

Explain the concept of assignment operators in C++.

• Assignment operators in C++ are used to compare values instead of assigning them.

• Assignment operators in C++ are not supported in the language.

• Assignment operators in C++ are used to assign values to variables by combining the assignment operator '=' with other operators to perform the operation and assign the result back to the variable.

• Assignment operators in C++ are only used for arithmetic operations.

What is the scope resolution operator (::) used for in C++?

• It is used to perform arithmetic operations in C++.

• It is used to declare variables in C++.

• It is used to define a new class in C++.

• It is used to access class members and static members in C++.

How do you use the conditional operator (?:) in C++?

• Syntax: condition ? value_if_true || value_if_false

• Syntax: condition ? value_if_true : value_if_false

• Syntax: condition ? value_if_true : value_if_false :

• Syntax: condition ? value_if_true : value_if_false;

What is the comma operator (,) used for in C++?

• Used to multiply two numbers

• Used to divide two numbers

• Used to increment a variable

• Used to separate expressions in a statement and returns the value of the rightmost expression.

Explain the bitwise operators in C++.

• Bitwise operators in C++ are only applicable to strings.

• Bitwise operators in C++ are used to perform operations on individual bits of integers. The main bitwise operators are AND (&), OR (|), XOR (^), NOT (~), left shift (<<), and right shift (>>). These operators manipulate the binary representation of numbers.

• The main bitwise operators in C++ are ADD (+), SUBTRACT (-), and MULTIPLY (*).

• Bitwise operators in C++ are used to perform operations on floating-point numbers.