AlgoFlow — Algorithm to Flowchart

STARTBegin the algorithm — rounded terminal node

END / STOPTerminate the algorithm — rounded terminal node

INPUT xRead a value — parallelogram shape

OUTPUT xWrite / print a value — parallelogram shape

RETURN xReturn from function — same as OUTPUT

IF c THENCondition in a diamond. Must end with ENDIF

ELSEOptional false branch inside the IF block

ENDIFCloses an IF block

WHILE c DOCondition diamond, body loops back. Close with ENDWHILE

ENDWHILECloses a WHILE block

FOR x DOSame as WHILE — close with ENDFOR

ENDFORCloses a FOR block

DOStart a DO...WHILE loop body. Close with WHILE c

WHILE cEnd of DO...WHILE — condition checked after body

CALL nameCall a subroutine — double-bar rectangle shape

FUNCTION nameSame as CALL — double-bar rectangle

SWITCH xStart a switch block on variable x

CASE vBranch for value v — diamond with label

DEFAULTFallback branch

ENDSWITCHCloses the switch block

PREP xPreparation / initialization — hexagon shape

DISPLAY xScreen output — display shape (pentagon)

CONNECTOR nFlow connector — small circle with label

BREAKExit current loop — red terminal-style node

CONTINUESkip to next iteration — amber node

COMMENT textAnnotation — dashed box off to the side

any textLines without a keyword become rectangular Process nodes

Keyword Reference