為什么下面這段話?編譯出錯？ ?原因BKSH5重復(fù)？ 不明白為什么重復(fù)？ 我只是想賦予BKSH5在不同時刻一個判斷值。 需要怎樣修正？

?

IF DIFFDAY>-30 THEN
BEGIN
?IF DIFF60MIN>-30 THEN
?BEGIN
??BKSH5:IF( DIFF15MIN>-70 and POSITIVEV5MIN,1,0);
??BKSH15:IF(POSITIVEV15MIN,1,0);
?END????
?ELSE
?BEGIN
??BKSH5:IF(DIFF15MIN>-30 AND POSITIVEV5MIN,1,0);
??BKSH15:IF(DIFF15MIN>-70 AND POSITIVEV15MIN,1,0);
?END
END?

?

IF DIFFDAY>-30 THEN
BEGIN
?IF DIFF60MIN>-30 THEN
?BEGIN
??BKSH5:IF( DIFF15MIN>-70 and POSITIVEV5MIN,1,0);
??BKSH15:IF(POSITIVEV15MIN,1,0);
?END????
?ELSE
?BEGIN
??BKSH5:=IF(DIFF15MIN>-30 AND POSITIVEV5MIN,1,0);
??BKSH15:=IF(DIFF15MIN>-70 AND POSITIVEV15MIN,1,0);
?END
END

這樣改下試下。

?

?來源:程序化久久網(wǎng)（ m.weiqiv.net.cn ）

?

:聲明變量并賦初始值。后面改變該變量必須是：=

:=代表對已有的變量進行賦值操作。