#include<iostream>
using namespace std;
int main()
{
int n, i, s = 0, c = 0;
cout << "Enter A Number : ";
cin >> n;
cout << endl;
for(i=1;i<=n;i++)
{
cout << i;
if(i%2 != 0 && i != n)
{
cout << " - ";
}
if(i%2 == 0 && i != n)
{
cout << " + ";
}
if(c%2 == 0)
{
s = s + i;
c++;
}
else
{
s = s - i;
c++;
}
}
cout << " = " << s << endl;
return 0;
}
using namespace std;
int main()
{
int n, i, s = 0, c = 0;
cout << "Enter A Number : ";
cin >> n;
cout << endl;
for(i=1;i<=n;i++)
{
cout << i;
if(i%2 != 0 && i != n)
{
cout << " - ";
}
if(i%2 == 0 && i != n)
{
cout << " + ";
}
if(c%2 == 0)
{
s = s + i;
c++;
}
else
{
s = s - i;
c++;
}
}
cout << " = " << s << endl;
return 0;
}
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