public function find_num() as integerdim i,j as integerdim sum as integerdim a,b,c as integerfor i=10 to 99for j=10 to 99sum=i*ja= sum\100b=( sum-a*100)\10c=mod(sum,10)if((a/20) and (b/20) and( c/20))...可我们这些都没有学过啊，请问对于初学者来说应该怎样做呢，怎样用C++来写呢你看懂原理就可以了c++的对应相应的语法书 就可以了