This can be a little confusing. Functions that return pointers almost always return a valid pointer (one that doesn't compare equal to zero) on success, and a null pointer (one that compares equal to zero) pointer on failure. Other functions return an int to show success or failure; typic...
C interview questions are given with the answers in this website. We have given C interview questions faced by freshers and experienced in real interviews in IT industries. Users are welcome to suggest or add any other questions and answers related to C interview questions. Click on each questi...
In a shallow copy, if the object contains pointers or references to otherdata structures, then it will only copy the current pointer, not the data it is pointing to. It is more memory efficient but the data is shared in the shallow copy. In Deep copy, it copies the pointer along with ...
The size of the Pointers is not fixed and it is independent of data type. It depends on the size of the different factors such as CPU architecture and the word size of the processor. Determining the size of a pointer is required if you want to know how many bytes of memory are occupie...
Without a doubt, C Programming Interview Questions have become an essential part of the interview process in most MNCs. Throughout this article, I will focus mainly on the most frequently asked and most current questions asked during interviews. Additionally, you will find a mix of Basic and Ad...
An array of 10 pointers to an integer is declared as, int *ptr[10]; 10) Why do we use ‘static’ variable in C? The purposes to use a static variable are: A static variable does not redeclare that means if it is declared in a function it will not redeclare on each function call...
On a 32-bit system, pointers are typically 4 bytes, while on a 64-bit system, pointers are typically 8 bytes. Types Of Format Specifiers In C Integer Format Specifier In C (%i or %d) The %i and %d format specifiers are used to represent integer values when the data type is a signed...
Pointers permit the management of structures that are allocated memory dynamically. Pointers make it possible to pass the address of the structure rather than the entire structure to the functions. For an in-depth understanding of Pointers click on: ...
C allows you to have pointer on a pointer and so on. 4 Passing pointers to functions in C Passing an argument by reference or by address enable the passed argument to be changed in the calling function by the called function. 5 Return pointer from functions in C C allows a function ...
Array elements can be accessed and modified with help of the pointers. Last WordIn this tutorial we talked of one dimensional arrays in C, why array index in C starts from zero, two dimensional arrays, passing 2-D array to a function, and double pointer and two dimensional arrays. Hope ...