Arrays are one of the most important data structures in C. They allow you to store multiple values of the same type in contiguous memory locations. While array elements are usually accessed using indices, pointers provide an alternative that is more flexible and can be used for advanced memory operations. Using pointers to access array […]

Counting the frequency of words in a string is a fundamental task in text processing, useful in applications like word counters, text analytics, and data mining. In C, this task requires handling strings as arrays of characters, parsing words, and keeping track of their occurrences. This tutorial will guide you through multiple methods to calculate

Removing spaces from a string is a common operation in text processing, especially when cleaning input data or preparing text for further analysis. In C, strings are arrays of characters ending with a null terminator (\0). By traversing the string and copying only non-space characters, we can efficiently remove all spaces. In this tutorial, we

Replacing characters in a string is a common operation in programming. It is useful for tasks such as data cleaning, text formatting, or implementing simple encryption. In C, strings are arrays of characters ending with a null terminator (\0). By scanning the string and changing specific characters, you can modify text as needed. In this

Finding the first non-repeating character in a string is a classic problem in programming. It involves examining each character in the string and determining which character appears only once and comes first in order. This problem is a common exercise in coding interviews and helps you practice arrays, loops, and character manipulation in C. In

Counting the occurrences of each character in a string is a common programming task. It helps you analyze text, understand frequency patterns, and build applications such as word counters, text analyzers, and encryption programs. In C, strings are arrays of characters ending with a null terminator (\0). By scanning the string character by character, we

Sorting strings is a fundamental concept in C programming. It is widely used in applications like managing lists of names, words, or other textual data. Sorting helps make data organized and readable, and learning different methods teaches important programming skills such as string manipulation, array handling, pointers, and algorithm design. In this guide, we will

A palindrome is a word, phrase, number, or sequence of characters that reads the same forward and backward. Some common examples are “madam”, “level”, and “radar”. In C programming, checking if a string is a palindrome helps you understand string manipulation, looping, recursion, and pointers. This problem may look simple, but it teaches important concepts

Comparing two strings is one of the most common operations in C programming. Normally, this is done using the standard library function strcmp(), which checks two strings character by character and returns whether they are equal, greater, or smaller. However, learning to compare strings without strcmp() is very useful. It helps you understand how strings

Copying a string is one of the most fundamental operations in C programming. Normally, this task can be done easily using the built-in library function strcpy(). However, writing your own code to copy strings without relying on strcpy() is an excellent way to understand how strings are stored and handled in memory. When you copy