Loop Statements [5] M

Programming & Algorithm Loop Statements August 07, 2006

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 .

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

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

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..”)

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.

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

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

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

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

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

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.

Loop Statements [5] M

by ecko_disasterz on Jan 29, 2009

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