DEF SELECT_Y_N() VAR B,V,Y COLOR ,0 FOR Y=23 TO 28 LOCATE 41,Y:?CHR$(0)*2; NEXT COLOR #TBLACK,#TWHITE LOCATE 45,24:?"はい" LOCATE 45,CSRY:?"いいえ" REPEAT VSYNC B=BUTTON(2) IF B AND 3 THEN LOCATE 44,24+V?CHR$(0):V=!V