^^Learnings of the Week

Submitted to:
Joyce Niko D. Perez
IV- RIZAL

ITERATIVE STATEMENTS

Iterative statements (loops) allow a set of instruction to be executed or performed several until condition are met. It can be predefined as in the loop, or open ended as in while and do-while.

Types of Iterative Statements

l The For statements

l The While statements

l The Do-While statements

For Statements

l The For statement or for loop is considered as a predefined loop because the number or times it iterates to perform its body is predetermined in the loop’s definition.

l The For loop contains a counter whose values determine the number of times the loop iterates. The iteration stops upon reaching the number of times specified in the loop.

l The general form of the for statement is:

for (initialization; condition; increment)

{

statement_sequence;

}

The for loop continues to execute until the condition is True (1). Once False (0), program execution resumes on the statement following the for loop.

While statement

l The while statement or while loop is an open-ended or event-controlled loop.

l The while loop iterates while the condition is TRUE (1).

l When it becomes FALSE (0), the program control passes to the line after the loop code.

l The general form of the while statement is:

while (condition)

{

statement_sequence;

}

The do-while statement

}

l The second type of open-ended or event-controlled loop is the do-while statement or do-while loop.

l The general form of the do-while statement is:

do

{

statement_sequence;

} while (condition);

l Do-While is a variation of the while statement which checks the condition at the bottom / end of the loop.

l This means that a do-while loop “always executes at least once”.

l In the do-while loop, when the condition evaluates to TRUE (1), the loop body will be executed, but when FALSE (0), program control proceeds to the next instruction after the do-while loop.