The while statement loops while a condition is true. The while statement has the following syntax:
while (condition)
statement // keeps executing statement until
condition is false
In the above example, the statement in the while block is executed as long as the condition is true. The condition is tested at the top of the loop each time. You can use {} brackets to group more than one statement. For example:
while (condition)
{
statement1
statement2
}