for-loop sample. Summing up numbers

03-12.forloopsum.cpp

// 03-12.forloopsum.cpp

#include <iostream>
using namespace std;

const int TOP = 1000;

int main()
{
    int sum = 0;

    for (int n = 1; n <= TOP; n++)  // Note that the variable n is a local
        sum = sum + n;              // variable of the body of the for loop!

    cout << "The sum of the numbers 1 to " << TOP << " is "
         << sum << endl;
    return 0;
}