data new;
set old;
count+1;
run;
A it is assigned a value 0 when the data step begins execution
C it is assigned a value 0 at the compile time
应该选A还是C
谢谢
m********l 发帖数: 791
2
i just completed my exam today...
the correct answer should be C
【在 l******0 的大作中提到】 : data new; : set old; : count+1; : run; : A it is assigned a value 0 when the data step begins execution : C it is assigned a value 0 at the compile time : 应该选A还是C : 谢谢
