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deleted 1 characters in body
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warren
warren
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#include <iostream>
using namespace std;
int main()
{
    int p, r = 1;
    int iSum=0;
    // cin >> n;
    
    for (int p = 0; p <= 10; p++)
    {
        r *= (-1);
        iSum+=r;
    }
    cout << iSum << endl;
    return 0;
}

#include <iostream>
using namespace std;
int main()
{
    int r = 1;
    int iSum=0;
    // cin >> n;
    
    for (int p = 0; p <= 10; p++)
    {
        r *= (-1);
        iSum+=r;
    }
    cout << iSum << endl;
    return 0;
}

#include <iostream>
using namespace std;
int main()
{
    int p, r = 1;
    int iSum=0;
    // cin >> n;
    
    for (p = 0; p <= 10; p++)
    {
        r *= (-1);
        iSum+=r;
    }
    cout << iSum << endl;
    return 0;
}
r has to be initalized with 1, and you have to loop including 10
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edit approved Jan 26, 2012 at 17:52
Ingemar
edit approved Jan 26, 2012 at 17:52
Ingemar
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#include <iostream>
using namespace std;
int main()
{
    int n, p, r = -1;
    int iSum=0;
    // cin >> n;
    
    for (int p = 0; p <<= 10; p++)
    {
        r *= (-1);
        iSum+=r;
    }
    cout << iSum << endl;
    return 0;
}

#include <iostream>
using namespace std;
int main()
{
    int n, p, r = -1;
    int iSum=0;
    // cin >> n;
    
    for (p = 0; p < 10; p++)
    {
        r *= (-1);
        iSum+=r;
    }
    cout << iSum << endl;
    return 0;
}

#include <iostream>
using namespace std;
int main()
{
    int r = 1;
    int iSum=0;
    // cin >> n;
    
    for (int p = 0; p <= 10; p++)
    {
        r *= (-1);
        iSum+=r;
    }
    cout << iSum << endl;
    return 0;
}
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MRM
MRM
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#include <iostream>
using namespace std;
int main()
{
    int n, p, r = -1;
    int iSum=0;
    // cin >> n;
    
    for (p = 0; p < 10; p++)
    {
        r *= (-1);
        iSum+=r;
    }
    cout << iSum << endl;
    return 0;
}