Category Archives: C programming

Dynamic memory allocation in C programming

Dynamic memory allocation refers to the process of manual memory management (allocation and deallocation). Dynamic memory allocation in C is performed via a group of built-in functions malloc(), calloc(), realloc() and free(). Some text also refer Dynamic memory allocation as Runtime memory allocation.

Continue reading Dynamic memory allocation in C programming

C program to check positive negative or zero using switch case

Write a C program to input a number and check positive negative or zero using switch case. Checking negative, positive or zero using switch case is little tricky. In this example, I will explain how to check positive negative or zero using switch case. However, it is not recommended way, it's just for learning.

Continue reading C program to check positive negative or zero using switch case

10 cool bitwise operator hacks and tricks every programmer must know

Bitwise operators are used to manipulate data at its lowest level (bit level). Data in memory (RAM) is organized as a sequence of bytes. Each byte is a group of eight consecutive bits. We use bitwise operators whenever we need to manipulate bits directly. In this post I will show you some cool bitwise operator hacks and tricks. These hacks will boost your programming skill.

Continue reading 10 cool bitwise operator hacks and tricks every programmer must know

Compile time and runtime memory allocation

Data at the centric level is most crucial part of every program that you have written. All programs contain memory allocation, deallocation and data manipulation. In this article, I am going to discuss about memory allocation and different ways to allocate memory in C.

Continue reading Compile time and runtime memory allocation

C program to list all files in a directory recursively

Write a C program to list all files in a directory. How to list all files in a directory recursively. How to use readdir() function to list all files in a directory recursively. Logic to list all files and sub-directories of a directory in C programming. How to use opendir(), readdir() and closedir() library functions.

Continue reading C program to list all files in a directory recursively

C program to convert uppercase to lowercase and vice versa in file

Quick links

Write a C program to convert uppercase to lowercase and vice versa in file. How to convert uppercase characters to lowercase and vice versa in a file in C programming. Logic to convert uppercase characters to lowercase and vice versa in C program.

Continue reading C program to convert uppercase to lowercase and vice versa in file