#include<iostream>
using namespace std;
int main()
{
int no,sum=0;
cout<<"please enter a number:";
cin>>no;
if(no>0)
for(int i=1; i<=no; i++)
{
cout<<i<<endl;
sum=sum+i;
cout<<"the sum is:"<<sum<<endl;
}
else
{
cout<<"you entered a negative number:";
}
}
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