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while Loop in C

Updated: 2026-07-05

Introduction

while Loop in C is a complete beginner-friendly tutorial on while loop in C. It is designed for BTech, diploma, viva, practical exams and placement preparation.

Definition

while loop in C is an important concept of C programming that helps students understand programming logic, syntax, memory and problem solving.

Real Life Example

Real-life example: A C program works like a recipe. Each statement gives one clear instruction to the computer.

C Program Example

#include <stdio.h>

int main(){
    printf("Welcome to C Programming");
    return 0;
}

Output

Sample output will appear according to the program and input.

Viva Questions

  1. Define while loop in C.
  2. Give one example of while loop in C.
  3. What are common mistakes in while loop in C?

MCQs

  1. while loop in C belongs to which programming language? Answer: C Programming
  2. Which function is the entry point of a C program? Answer: main()