Basic - Loop with condition on the beginning: do while loop, while wend

Condition testing is done at the beginning of the loop. before each iteration the condition is tested, if it is was true. before the first iteration is a condition test, the use of this loop is excellent in situations where perhaps we don't need to execute the cycle.

do while loop

Description

do while condition
statements
loop

Used keywords: do while loop

Input

condition - Logical value The condition can be any expression
statements - statements

Note: Here usable statements:
break statement continue statement

Compatible programing languages:
FreeBASIC

Examples

Basic

Loop with condition on the beginning the possible of use:

i=0
do while i<10
 i=i+1
loop
x =0
do while i<20
 i= i+2
 if i=16 then
    continue while
 end if
 x=x+1 
loop

Basic

Other pieces of example codes:

do while i>0
   if i=10 then
     exit do
   else
     i=i-1
   end if
loop

if  x >= 12 then
   do while y >= 0   
      y=y-1
loop
end if

do while y <= 32   
   y=y+1
loop

while wend

Description

while condition
statements
 wend

Used keywords: while wend

Input

condition - Logical value The condition can be any expression
statements - statements

Note: Here usable statements:
break statement continue statement

Compatible programing languages:
FreeBASIC

Examples

Basic

Loop with condition on the beginning the possible of use:

i=0
do while i<10
 i=i+1
loop
x =0
do while i<20
 i= i+2
 if i=16 then
    continue while
 end if
 x=x+1 
loop

Loop with condition on the beginning in another programming language:

Differences to: