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1、VF函数与表达式练习一VF6.0函数练习题1.?STR(36295.2740,8,2)_________2.?STR(328.57,9,1)_________3.?STR(1980.6431)_________4.STORE“48.915”TOB?STR(&B,3)__________5.?STR(36295.2,4)_________6.STR(3.1416,6,3)_________7.?VAL(“470.535BEC”)________8.?VAL(“A1B2C3”)___________9.
2、?VAL(“2e4”)________10.姓名=”lakERs”?UPPER(SUBSTR(姓名,2,2))______?LOWER(SUBSTR(姓名,4,2))______11.?upper(“Hello”)_________?LOWER(“Hello”)_________12.X=100Y=200Z=X+YZ=”400”?5+&Z__________13.X=100Y=200C=”X+Y”?5+&C__________14.X=”2010+11”?”&X+5”_________?&X+5__
3、_______15.X=”1997”,?”&X+5”_________16.X=”56.87”Y=&XZ=STR(Y,2)+”21&X”?Z_________17.D=”*”?”5&D.8=”+STR(5&D.8,2)_________18.A="-489.31"?ABS(ROUND(&A+4,0))__________19.?ABS(78.5)___________?ABS(-78.5)___________20.M=”81”?SQRT(&X+19)_________21.?SQRT(16+9)_
4、________22.?MOD(26,-7)_______?MOD(-26,7)_______?MOD(26,7)_______?MOD(-26,-7)_______23.?TYPE(MOD(-33,7))________24.?TYPE(“DTOC(DATE())”)________25.?TYPE(“1”)________?TYPE([TYPE(“1”)])________26.?TYPE(“[1]”)________?TYPE(‘TYPE(“[1]”)’)__________27.A=”+”?
5、TYPE(“7&A.8”)__________28.?TYPE(“X=56.7”)__________29.y=25CD="Y"?STR(&CD,3)______?TYPE("&CD")_____?TYPE(CD)_______?SQRT(&CD)_______?STR(SQRT(&CD))_________30.?LEN(“$123Q学校”)_______31.?LEN(STR(2*3.14*5,4,2)+’/10’)_______32.?LEN(STR(78.94)-‘20’)_______33
6、.?IIF(4<7,”对”,”错”)________34.X=18.346?IIF(X>8,ROUND(X,2),INT(X))_______35.M=11N=22?IIF(INT(3.8)>3.5,M,N)_________36.?IIF(LEN(REPLICATE(“*”,4))>6,5,-5)_________37.?AT(“管理”,“数据库管理系统”)________?AT(“IS”,”THISISMINE”)______?AT(“IS”,”THISISMINE”,2)_____?AT(“K
7、”,”akhKvKk”,2)_______?AT(“k”,”akhKvKk”,2)______38.?AT(’国际经济系’，’国际关系学院国际经济系’)______39.?AT(“BA”,”ABCDEF”)______40.SUBSTR(“shujuku管理xitong”,8,4)______41.SUBSTR(“全国计算机等级考试题”,5,6)_________42.SUBSTR(“全国计算机等级考试题”,11,9/2)_________43.SUBSTR(“数据库二级考试”,AT(“1”,”56
8、7890123”),4)_________44.ROUND(8.265,2)______ROUND(578.26,-2)______ROUND(261.23,0)______45.下列函数中，函数值为数值型的是（）A．STRB.DTOCC.LEND.LIKE46.假设a=2,b=3,c=”a+b”,则1+&c的值为（）A.数据类型不匹配B.123C.6D.1A+B47.TIME()函数值的数据类型为（）A.数值型B.时间型C.日期时间型D.字符型3VF函数与表达式练习
