数据集：
John Garcia 114Maple Ave.
Sylvia Chung 1302Washington Drive
Martha Newton 45S.E. 14th St.
程序：
DATA homeaddress; INFILE ’c:\MyRawData\Address.dat’ TRUNCOVER; INPUT Name $ 1-15 Number 16-19 Street $ 22-37; RUN;

DATA homeaddress; INFILE ’c:\MyRawData\Address.dat’ missover; INPUT Name $ 1-15 Number 16-19 Street $ 22-37; RUN;
请问各位大虾，为什么这里要加turnover；另外为什么不加或者只加missover会出现错误？