C Program to Demonstrate the do-while Loop

Posted on October 10, 2011June 30, 2026 by Sandeepa Nadahalli

The do-while loop in C is a post-test loop: it executes the body first and checks the condition afterward. This guarantees the body runs at least once, regardless of the condition’s initial truth value. This is the key difference from the while loop, which checks the condition before the first iteration and may never execute …

Binary Search in C – Iterative and Recursive with Example

Posted on September 30, 2011June 23, 2026 by Sandeepa Nadahalli

Binary search in C finds a target value in a sorted array by repeatedly halving the search space. At each step it compares the target against the middle element: if they match, the search is done; if the target is smaller, discard the right half; if larger, discard the left half. This gives O(log n) …