C-Variable Declaration and Scope Archives

Difference between Instance Variable and Local Variable

Last Updated: 02 November 2023

A variable is a name given to a memory location. It is the basic unit of storage in a program.The value stored in a variable can be changed during program execution.A vari...read more

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Competitive Programming

C++

C-Variable Declaration and Scope

Difference Between

C++ Programs

DSA

Difference between Instance Variable and Class Variable

Last Updated: 28 April 2021

Instance Variable: It is basically a class variable without a static modifier and is usually shared by all class instances. Across different objects, these variables can h...read more

Analysis of Algorithms

C-Variable Declaration and Scope

Difference Between

DSA

Efficient ways to compare a variable with multiple values

Last Updated: 02 April 2024

In this article, we will discuss the ways to compare a variable with values.Method 1: The idea is to compare each variable individually to all the multiple values at a tim...read more

C++

C-Variable Declaration and Scope

C++ Programs

Difference between Identifiers and Variables in C

Last Updated: 28 October 2020

Perquisites: Identifiers, VariablesIdentifiersIdentifiers are used for the naming of variables, functions, and arrays. It is a string of alphanumeric characters that begin...read more

C Language

C-Variable Declaration and Scope

Difference Between

Difference between Static variables and Register variables in C

Last Updated: 04 January 2021

static variablesStatic variables have a property of preserving their value even after they are out of their scope! Hence, static variables preserve their previous value in...read more

Technical Scripter

C Language

C-Variable Declaration and Scope

Difference Between

Can Global Variables be dangerous ?

Last Updated: 10 July 2021

In a small code, we can track values of global variables. But if the code size grows, they make code less understandable (hence less maintainable). It becomes difficult to...read more

Misc

C Language

C++

C-Variable Declaration and Scope

Implicit initialization of variables with 0 or 1 in C

Last Updated: 19 June 2018

In C programming language, the variables should be declared before a value is assigned to it. For Example: // declaration of variable a and // initializing it with 0...read more

Technical Scripter

C Language

C-Variable Declaration and Scope

Internal Linkage and External Linkage in C

Last Updated: 02 April 2025

In C, linkage is a concept that describes how names/identifiers can or cannot refer to the same entity throughout the whole program or a single translation unit. The above...read more

GBlog

C Language

Design Pattern

C-Variable Declaration and Scope

Redeclaration of global variable in C

Last Updated: 28 May 2017

Consider the below two programs:[sourcecode language="C"]// Program 1int main(){ int x; int x = 5; printf(%d, x); return 0; }[/sourcecode]Output in C: redeclaratio...read more

cpp-storage-classes

C Language

C-Variable Declaration and Scope

C Variables

Last Updated: 13 May 2025

A variable in C is a named piece of memory which is used to store data and access it whenever required. It allows us to use the memory without having to memorize the exact...read more

C Basics

C Language

C-Variable Declaration and Scope

C | Variable Declaration and Scope | Question 8

Last Updated: 28 June 2021

Consider the following C program, which variable has the longest scope?[sourcecode language="C"]int a;int main(){ int b; // .. // ..}int c;[/sourcecode](A) a(B) b(C)...read more

C Language

C Quiz

C-Variable Declaration and Scope

C | Variable Declaration and Scope | Question 7

Last Updated: 28 June 2021

[sourcecode language="C"]int main(){ int x = 032; printf(%d, x); return 0;}[/sourcecode](A) 32(B) 0(C) 26(D) 50 Answer: (C) Explanation: When a constant value starts wi...read more

C Language

C Quiz

C-Variable Declaration and Scope

C | Variable Declaration and Scope | Question 6

Last Updated: 28 June 2021

Output? [sourcecode language="C"]#include stdio.hint main(){ int x = 1, y = 2, z = 3; printf( x = %d, y = %d, z = %d \n, x, y, z); { int x = 10; float y = 2...read more

C Language

C Quiz

C-Variable Declaration and Scope

C | Variable Declaration and Scope | Question 5

Last Updated: 09 August 2019

Output?[sourcecode language="C"]int main(){ { int var = 10; } { printf(%d, var); } return 0;}[/sourcecode](A) 10(B) Compiler Error(C) Garbage Value Answer...read more

C Quiz

C-Variable Declaration and Scope

C | Variable Declaration and Scope | Question 4

Last Updated: 28 June 2021

[sourcecode language="C"]#include stdio.hextern int var = 0;int main(){ var = 10; printf(%d , var); return 0;}[/sourcecode](A) 10(B) Compiler Error: var is not de...read more

C Language

C Quiz

C-Variable Declaration and Scope