The document discusses different types of loop statements in programming including for, while, and do-while loops. It provides examples of using arrays and different loop structures to repeatedly output or calculate values. Exercises are presented for creating algorithms that use loops to display numbers, characters, Fibonacci sequences, and other repetitive calculations.

1. Programming & Algorithm Loop Statements August 07, 2006

2. Array: The Basic An Array is an indexed group of data storage that have the same name and are distinguished from each other by an index (that is a number following the variable name, enclosed in brackets). A single-dimensional array declaration has the following form: typename array_name[size]; Note : The first index of an array is zero .

3. Loop Statement The function is to execute one/some statement(s) several times. There are three loop statements: for statement while…do statement do…while statement

4. The for S tatement Syntax: for ( initial ; condition ; increment ) statement(s);

5. The for S tatement E.g.: Display the words “Welcome to this cruel world..” ten times. for (i ← 0; i ≤ 9; i ← i + 1) output(“Welcome to this cruel world..”)

6. Exercises Create an algorithm that displays numbers (1 to 25) on screen. Create an algorithm that uses loop statements to displays following formation of ‘*’ character on screen. a. b. c.

7. Exercises Create an algorithm that prints the result of X powered by Y. The algorithm received two numbers of integer (X and Y). Create an algorithm that asks one number of integer (N) and displays the numbers of Fibonacci on screen. E.g.: 1 1 2 3 5 8 13 7 Output Input

8. The while S tatement Syntax: while ( condition ) statement(s);

9. The do…while S tatement Syntax: do statement(s); while ( condition );

10. Nested Loops The term nested loops refers to a loop that is contained within another loop.

11. Exercises Create an algorithm that continually inputs one integer (N) and then displays a triangle (N rows). The algorithm will be terminated when the input is zero. E.g.: 4 Output Input

12. Exercises A mathematics' formula is shown by: Sn = (2 * n) + 3 Un = Sn + Sn- 1 + … + S 0 Create an algorithm that continually inputs one integer (n) and then displays the result (Un) on screen. The algorithm will be terminated when the input is minus one.