有谁知道是怎么回事吗?
Data record3;
Input id $ l_name $ f_name $ score;
name=l_name || ' '||f_name;
Cards;
A01 Li Moshi 95
A02 Liu Ning 98
A03 Chen Gong 88
A04 Yan Yang 88
;
Data record4;
Set record3;
If score > 90 then grade = 'A';
Else if score>80 then grade = 'B';
Else if score>70 then grade = 'C';
Else grade='D';
score2 = score/10;
Keep id name grade score2;



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