48.The following SAS program is submitted: data WORK.TEST; drop City; infile datalines; input Name $ 1-14 / Address $ 1-14 / City $ 1-12 ; if City='New York ' then input @1 State $2.; else input; datalines; Joe Conley 123 Main St. Janesville WI Jane Ngyuen 555 Alpha Ave. New York NY Jennifer Jason 666 Mt. Diablo Eureka CA ; What will the data set WORK.TEST contain? A. Name Address State -------------- ---------------- ------ Joe Conley 123 Main St. Jane Ngyuen 555 Alpha Ave. NY Jennifer Jason 666 Mt. Diablo B. Name Address City State -------------- ---------------- ----------- ------ Joe Conley 123 Main St. Janesville Jane Ngyuen 555 Alpha Ave. New York NY Jennifer Jason 666 Mt. Diablo Eureka C. Name Address State -------------- ---------------- ------ Jane Ngyuen 555 Alpha Ave. NY D. O observations,there is a syntax error in the data step. Answer:A
能不呢具体解释一下题干中drop city;和infile datalines;这两项分别是什么意思,在题目里起到了什么作用,如果去掉会怎么样?
|