(4)不能被3、5、7任一个整除
//----------------------------------- //EX0406.cpp //整除3,5,7 //----------------------------------- #include<fstream> //for file abc.txt #include<iostream> using namespace std; //----------------------------------- int main() { ifstream cin("abc.txt); for(int n; cin>>n; ) case 0: cout<<n<<"-->None\n"; break case 1: cout<<n<<"-->7\n"; break case 2: cout<<n<<"-->5\n"; break case 3: cout<<n<<"-->5,7n"; break case 4: cout<<n<<"-->3\n"; break case 5: cout<<n<<"-->3,7\n"; break case 6: cout<<n<<"-->3,5\n"; break case 7: cout<<n<<"-->3,5,7\n"; break } }//----------------------------------
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