Code snippets for Interviewstreet Sample Test

run1.cc

/* This is the correct working solution */
#include <iostream>
using namespace std;
int main() {
    int n, sum = 0;
    cin >> n;
    for (int i=0; i<=n; i++) {
        sum += i;
    }
    cout << sum << endl;
    return 0;
}

run2.cc

/* This code is logically correct, but has output format error */
#include <iostream>
using namespace std;
int main() {
    int n, sum = 0;
    cout << "Enter the number N" << endl;  // THIS LINE SHOULD NOT BE PRESENT. DON'T PRINT ANYTHING EXTRA
    cin >> n;
    for (int i=0; i<=n; i++) {
        sum += i;
    }
    cout << sum << endl;
    return 0;
}

run3.cc

/* This code is logically correct, but has output format ERROR */
/* This code is logically correct, but has output format error */
#include <iostream>
using namespace std;
int main() {
    int n, sum = 0;
    cin >> n;
    for (int i=0; i<=n; i++) {
        sum += i;
    }
    cout << "The result is " << endl;  // THIS LINE SHOULD NOT BE PRESENT. DON'T PRINT ANYTHING EXTRA
    cout << sum << endl;
    return 0;
}