CREATE CURSOR tt (班级 c(10),学号 c(10),成绩 n(3)) INSERT INTO tt VALUES ("01","X0101",86) INSERT INTO tt VALUES ("01","X0102",92) INSERT INTO tt VALUES ("01","X0103",72) INSERT INTO tt VALUES ("01","X0104",86) INSERT INTO tt VALUES ("02","X0201",75) INSERT INTO tt VALUES ("02","X0202",81) INSE...

clear a=3 b=a ?"孪生素数对：" for i=3 to 100 step 2 x=0 for j=2 to i-1 if i/j=int(i/j) x=1 endif endfor if x=0 a=i if a-b=2 ?b,a endif b=a endif endfor