【正确答案】set talk off clear input"n=" to n s=0 x=0 if n<3 then ? "请输入不小于3的数字" else for i=3 to n step 2 s=s+i next for m=2 to n for i=2 to int(sqrt(m)) if m%i=0 exit endif next if i>int(sqrt(m)) x=x+1 endif next endif ?"奇数之和为：",s ?"质数个数为：",x cancel set talk on