C Array and String Archives

Last Updated: 14 July 2023

In this article, we will learn how to implement your own custom printf() function in C language.The printf() function is present in stdio.h header and uses a const char* a...read more

C Language

How To

C-Output

C Array and String

gets() is risky to use!

Last Updated: 30 October 2023

Consider the below program. C void read(){ char str[20]; gets(str); printf("%s", str); return;} The code looks simple, it reads string from standard ...read more

Do Not Use sizeof For Array Parameters in C

Last Updated: 01 July 2022

Using sizeof directly to find the size of arrays can result in an error in the code, as array parameters are treated as pointers. Consider the below program.C /...read more

C Language

C++

C Array and String

Write one line functions for strcat() and strcmp()

Last Updated: 31 July 2018

Recursion can be used to do both tasks in one line. Below are one line implementations for stracat() and strcmp(). C /* my_strcat(dest, src) copies data of src ...read more

C Language

C Array and String

Initialization of Multidimensional Array in C

Last Updated: 18 December 2024

In C, multidimensional arrays are the arrays that contain more than one dimensions. These arrays are useful when we need to store data in a table or matrix-like structure....read more

What is the difference between single quoted and double quoted declaration of char array?

Last Updated: 06 January 2025

In C programming, the way we declare and initialize a char array can differ based on whether we want to use a sequence of characters and strings. They are basically same w...read more

C Language

C Array and String

Are Array Members Deeply Copied?

Last Updated: 16 April 2025

In C++, we can assign a struct (or class) variable to another variable of same type. All members of one variable are copied to the other variable. But what happens when th...read more

C Language

pointer

C Array and String

Initialization of variables sized arrays in C

Last Updated: 28 September 2018

The C99 standard allows variable sized arrays (see this). But, unlike the normal arrays, variable sized arrays cannot be initialized. For example, the following program c...read more

C Language

C Array and String

Difference between Arrays and Pointers

Last Updated: 07 August 2023

The array and pointers are derived data types that have lots of differences and similarities. In some cases, we can even use pointers in place of an array, and arrays auto...read more

How to pass a 2D array as a parameter in C?

Last Updated: 04 March 2025

A 2D array is essentially an array of arrays, where each element of the main array holds another array. In this article, we will see how to pass a 2D array to a function.T...read more

C Language

cpp-parameter-passing

cpp-array

cpp-pointer

C Array and String

How to dynamically allocate a 2D array in C?

Last Updated: 10 January 2025

Following are different ways to create a 2D array on the heap (or dynamically allocate a 2D array).In the following examples, we have considered 'r' as number of rows, 'c'...read more

Variable Length Arrays (VLAs) in C

Last Updated: 10 January 2025

In C, variable length arrays (VLAs) are also known as runtime-sized or variable-sized arrays. The size of such arrays is defined at run-time.Variably modified types includ...read more

How to write long strings in Multi-lines C/C++?

Last Updated: 06 July 2023

Image a situation where we want to use or print a long long string in C or C++, how to do this? In C/C++, we can break a string at any point in the middle using two doubl...read more

What are the data types for which it is not possible to create an array?

Last Updated: 18 December 2024

In C, an array is a collection of variables of the same data type, stored in contiguous memory locations. Arrays can store data of primitive types like integers, character...read more

What's difference between char s[] and char *s in C?

Last Updated: 04 June 2025

Consider below two statements in C. What is the difference between the two? char s[] = "geeksquiz"; char *s = "geeksquiz";Below are the key differences:Aspectchar a[1...read more