Swift – while Loop
A while loop statement in Swift programming language repeatedly executes a target
statement as long as a given condition is true.
Syntax
The syntax of a while loop in Swift programming language is:
while condition
{
statement(s)
}Here statement(s) may be a single statement or a block of statements. The
condition may be any expression. The loop iterates while the condition is true. When the
condition becomes false, the program control passes to the line immediately following the
loop.
The number 0, the strings '0' and "", the empty list(), and undef are all false in a Boolean
context and all other values are true. Negation of a true value by! or not returns a special
false value.
Flow Diagram