Program | MCQs

Explanation

For using a variable in C++, we have to first define it to tell the compiler about its existence so that compiler can allocate the required memory to it.

AGM 24-12-2022

Explanation

An entry point is the point at which execution of program starts.

In C++, it is the main () function.

AGM 17-12-2022

Explanation

Keywords, also known as reserved words, have special meaning to the C++ compiler and are always written or typed in short(lower) cases.

AGM 17-12-2022

Explanation

Flowchart is a symbolic and diagrammatic representation of algorithm

A flowchart is nothing but a pictorial representation of an algorithm.

AGM 17-12-2022

Explanation

A program is a set of step-by-step instructions that directs the computer to do the tasks you want it to do and produce the results you want.

Explanation

The basic function performed by a computer is execution of a program.

Taking data and instructions from a user, processing the data as per instructions, and displaying or storing the processed data, are the four major functions of a computer.

Explanation

Variable scope refers to the extent of code in which a variable can be referenced.

Variables defined inside a function are called local variables.

The scope of local variables and dummy arguments is limited to the function in which they are defined.

Explanation

The conditional operator (? :) is a shorthand for the if-else statement.

It evaluates a condition and returns one value if true, another if false.

Explanation

r is the carriage return escape sequence, which moves the cursor to the beginning of the current line.

It does not move to the next line, unlike n (newline).

Explanation

long double provides higher precision than double and float for storing real numbers.

It allows more digits after the decimal point, making it suitable for high-accuracy calculations.