;int i = 0

/;if (i==0)
    ;i = 2

;/
/;else
    ;i = 0

;/

# ;; can be used as a quick block re-definition

/;if (i==0)
    ;i = 2

;;else
    ;i = 0

;/

/;if
    ;char ch = '\n'

;;else
    ;int it = 90

;/

/;main
    ;
    
;/