循环-01. 求整数段和(15)

 1 #include<iostream>
 2 #include<iomanip>
 3 using namespace std;
 4 int main(){
 5     int m,n,c=0,sum=0;
 6     cin>>m>>n;
 7     while(m<=n){
 8         if(c&&c%5==0)
 9             cout<<endl;
10         cout<<setiosflags(ios::right)<<setw(5)<<m;
11         sum+=m;
12         m++;
13         c++;
14     }
15     cout<<endl;
16     cout<<"Sum = "<<sum<<endl;
17     return 0;
18 }