Day 16:

Looping Statements

Looping statement are the execution of the block of code repeatedly until we break it.

for Loop

Executes a block of code a specific number of times until the condition is true or a n number of times with the initialization, condition and increment/decrement.

Syntax:

• Initialization condition: we need to initialize the variable to be used in the loop, It marks the start of a for loop. An already declared variable can be used or a variable can be declared new here.
• Condition: It is used to define the exit condition for a loop. It must return a boolean value. It is also an Entry Control Loop as the condition is checked prior to the execution of the loop statements.
• Statement execution: Once the condition is evaluated to true, the statements in the loop body are executed.
• Increment/ Decrement: It is used for updating the variable for next iteration.
• Loop termination: When the condition becomes false, the loop terminates marking the end of its life cycle.

Example:

While Loop

Executes a block of code as long as the condition is true.

A while loop is a control flow statement that allows code to be executed repeatedly based on a given Boolean condition.

• An entry-controlled loop is a loop construct where the condition is checked before the loop body is executed. In a while loop, the condition is checked before the loop body executes, and if it is false, the loop body does not run.?

Example:

Do while

Executes the loop body at least once before checking the condition. Do while loop is similar to while loop with only difference that it checks for condition after executing the statements, and therefore is an example of Exit Control Loop.?

Example:

For Each Loop/Enhanced For loop:

To iterate over the arrays or collections we use this For each loop. As name says it just loop arrays as single element.

Syntax:

Example:

Let's run through the Jump statements tomorrow. Happy Learning