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while loop in Julia

  • Last Updated : 19 Feb, 2020

In Julia, while loop is used to execute a block of statements repeatedly until a given condition is satisfied. And when the condition becomes false, the line immediately after the loop in the program is executed. If the condition is false when the while loop is executed first time, then the body of the loop will never be executed.
 
While-loop-Julia
 
Syntax :

while expression

    statement(s)

end

Here, ‘while‘ is the keyword to start while loop, ‘expression‘ is the condition to be satisfied, and ‘end‘ is the keyword to end the while loop.

Note: A block of code is the set of statements enclosed between the conditional statement and the ‘end‘ statement.

Example 1:




# Julia program to illustrate 
# the use of while loop
  
# Declaring Array
Array = ["Geeks", "For", "Geeks"]
  
# Iterator Variable
i = 1
  
# while loop
while i <= length(Array)
  
    # Assigning value to object
    Object = Array[i]
      
    # Printing object
    println("$Object")
      
    # Updating iterator globally
    global i += 1
      
# Ending Loop
end

Output:
While-loop-Output-01
 
Example 2:




# Julia program to generate 
# the Fibonacci sequence 
  
# The length of Fibonacci sequence
length = 15
  
# The first two values
a = 0
b = 1
  
# Iterator Value
itr = 0
  
# while loop condition
while itr < length
  
   # Printing fibonacci value
   print(a, ", ")
     
   # Updating value
   c = a + b
     
   # Modify values
   global a = b
   global b = c
     
   # Updating iterator
   global itr += 1
  
# End of while loop
end

While-loop-Output-02




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