Available on: all targets

IF...THEN...ELSE...ELSEIF...ENDIF

Implement a conditional jump. This implementation assumes that an expression passed as a parameter is 0 (for false) and not zero (for true). In this case, if the expression is zero, it jumps directly to the statement following the corresponding ENDIF (or ELSE, if present). Otherwise, the following code will be executed (up to ENDIF or ELSE).

syntax example abbreviation back to keywords

SYNTAX

 IF expression THEN
    ...
 ELSE
    ...
 ENDIF
 IF expression THEN
    ...
 ELSEIF expression2 THEN
    ...
    ...
 ELSE
    ...
 ENDIF


Legend
  • id : identifier
  • type : datatype
  • v : value
  • "..." : string
  • [...] : optional

EXAMPLE

 IF ( x == 42 ) THEN : x = 0 : ELSE : x = 1 : ENDIF
 IF ( x == 42 ) THEN : x = 0 : ELSE IF y == 0 THEN : y = 42 : ELSE : x = 1 : ENDIF
 IF ( x == 42 ) THEN
   x = 0
 ELSE IF y == 0 THEN
   y = 42
 ELSE
   x = 1
 ENDIF


Used in:

ABBREVIATION: If...Th...El...Eif...Ei

Join BASIC 10Liner Contest with ugBASIC!

An interesting competition is held at the beginning of each year: the BASIC 10Liner Contest. It is possible to use ugBASIC to participate in the next "BASIC10Liner" competition, in the following categories:

  • PUR-120 - A game in 10 lines of max 120 characters (w/abbrev.)
  • EXTREME-256 - A game in 10 lines of max 256 characters (w/abbrev.)
  • SCHAU - Any program in 10 lines of max 256 characters (w/abbrev.)
In order to reduce space you can use this abbreviation for this instruction: 

IF...THEN...ELSE...ELSEIF...ENDIF ↔ If...Th...El...Eif...Ei

Any problem?

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