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Programming Language / C++ / C++ Quiz

C++ Quiz

11 posts

Why are negative numbers stored as 2's complement?

Last Updated: 11 July 2025

When doing addition/subtraction on binary numbers in other representations we need to apply different logics (circuits) to perform addition and subtraction. In 2s-compleme...read more

Programming Language

Replace every character of a string by a different character

Last Updated: 02 September 2022

Given a string str of lowercase alphabets only. The task is to replace every character by some new character. The new character belongs to$a-z$(small case only) Replacemen...read more

Convert time from 24 hour clock to 12 hour clock format

Last Updated: 02 August 2022

Given a time in a 24-hour clock (military time), convert it to a 12-hour clock format.Note: Midnight is 00:00:00 on a 24-hour clock and 12:00:00 AM on a 12-hour clock. Noo...read more

Technical Scripter

Technical Scripter 2018

date-time-program

Constructive Algorithms

Default value of Vector in C++ STL

Last Updated: 12 July 2025

Vectors are the same as dynamic arrays with the ability to resize itself automatically when an element is inserted or deleted, with their storage being handled automatical...read more

Write From Home

Count of subarrays having sum as a perfect cube

Last Updated: 15 November 2022

Given an array arr[], the task is to count the subarrays having sum as a perfect cube.Examples:Input: arr[] = {6, 10, 9, 2, 1, 113}Output: 3Explanation:The subarrays with ...read more

maths-perfect-cube

Header Guard in C++

Last Updated: 15 July 2025

Header Guards in C++ are conditional compilation directives that help to avoid errors that arise when the same function or variable is defined more than once by the mistak...read more

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Programming Language

How to access private/protected method outside a class in C++

Last Updated: 15 July 2025

Prerequisites: Access Modifiers in C++, Runtime PolymorphismPrivate: The class members declared as private can be accessed only by the functions inside the class. They are...read more

access modifiers

C++-Class and Object

Difference between int (*p)[3] and int* p[3]?

Last Updated: 24 November 2020

Pointers store the address of variables or a memory location. Pointers are a symbolic representation of addresses. They enable programs to simulate call-by-reference as we...read more

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Difference Between

Exit a loop in C++

Last Updated: 20 January 2021

Exit a Loop in C++: If the condition of an iteration statement (for, while, or do-while statement) is omitted, that loop will not terminate unless the user explicitly exit...read more

Loops & Control Structure

Generate Quadratic Equation having given sum and product of roots

Last Updated: 04 May 2021

Given two integers S and M, the task is to find the coefficients of the quadratic equation such that the sum and the product of the roots are S and M respectively.Examples...read more

How to find Size of std::forward_list in C++ STL

Last Updated: 08 October 2021

Forward list in standard template library of C++. It comes under #includeforward_list header file. It is implemented as a singly linked list. It was introduced in C++ 11 f...read more

CPP-forward-list