大家帮我看看sas编程有错没

1# ciciwanghk

1. 
   
2. data test ;
   
3. input datetime datetime18. ;
   
4. date = datepart(datetime); time = timepart(datetime);
   
5. if date > '01Oct1949'd then status  = 'new China';
   
6. if time < '12:00't then day = 'morning';
   
7. format datetime datetime20. date date9. time time5.;
   
8. cards;
   
9. 04jul1776:12:00
   
10. 11dec1941:23:00
    
11. 20apr1971:00:00
    
12. 25dec2000:15:01
    
13. ;

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救人一命。。。

11# jingju11
data a ;
input datetime datetime18. ;
format datetime datetime20.;
cards;
04jul1776:11:00
11dec1941:10:00
20apr1971:13:50
25dec2000:15:01
;
run;
data b;
set a;
time=timepart(datetime);
if time < '12:00't then time = 'morning';
else if time>'13:00't then time='afernoon';
run;
大侠帮我看看吧；我要把time从时间型换成字符型 怎么办啊

12# ciciwanghk
time时间是以数值型储存的，所以要想将time由时间转换为字符，直接写入'morning'和'afternoon'是不行的。

1. 
   
2. data b(drop=time rename=(day=time));
   
3. set a;
   
4. format day $8.;
   
5. time=timepart(datetime);
   
6. if time < '12:00't then day = 'morning';
   
7. else if time>'13:00't then day='afernoon';
   
8. run;

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