{"id":15079,"date":"2023-03-28T10:42:47","date_gmt":"2023-03-28T10:42:47","guid":{"rendered":"https:\/\/www.prepbytes.com\/blog\/?p=15079"},"modified":"2023-12-29T12:10:21","modified_gmt":"2023-12-29T12:10:21","slug":"difference-between-while-and-do-while-loop","status":"publish","type":"post","link":"https:\/\/prepbytes.com\/blog\/difference-between-while-and-do-while-loop\/","title":{"rendered":"Difference Between While and Do While Loop"},"content":{"rendered":"

\"\"<\/p>\n

Loops are essential constructs for repetitive execution of code, and two commonly used loop structures are the while loop and the do-while loop. While both loops facilitate iteration, they differ in their execution order and conditions. Understanding the distinctions between the while and do-while loops is crucial for choosing the appropriate structure based on the specific requirements of a program.<\/p>\n

What is Loop?<\/h2>\n

A loop’s definition in computer programming is similar to its meaning. Loops are a block of code that executes multiple times. If there were no loops, you would have to write everything you wanted to print repeatedly. A Loop repeats the sequence of statements until the stated condition is false. The loop’s purpose is to repeatedly execute the same code.<\/p>\n

What is While Loop?<\/h2>\n

A while loop is a control flow statement that allows code to be executed multiple times based on a specified Boolean condition. A loop consists of two components: the loop body and the control statement. The control statement is a set of conditions that instructs the loop’s body to continue running until the specified condition is met. The while loop is similar to a looping if statement.<\/p>\n

We check the condition at the beginning of the loop structure in this loop. A code block will run until the condition is true, at which point the loop will be terminated or ended. We call it an infinite loop if the condition remains true.<\/p>\n

A While loop<\/a> is the most basic looping structure. It is a loop with an entry control. A while loop evaluates a condition before processing the loop’s body. If a condition is true, the body of a loop is executed, and only then.<\/p>\n

After the body of a loop is completed, the control returns to the beginning, and the condition is checked. If it is true, the same procedure is followed until the condition is false. When the condition is false, the control exits the loop.<\/p>\n

If the condition in a while loop is not true, the body of the loop will not be executed, not even once.<\/p>\n

Syntax of While Loop<\/h3>\n
while (boolean condition)\n{\n   loop statements...\n}<\/code><\/pre>\n
Flowchart of While Loop<\/h3>\n
\"\"<\/p>\n
Example of While Loop<\/h3>\n
Below we have code implementation and explanation of While loop.<\/p>\n\t\t\t\t\t\t