C++求最大子數組之和

#include 
using namespace std;

int getmaxsum(int a[],int n)
{
    int i = 0;
    int j ;
    int k;
    int sum = 0;
    int save = 0;
    for (; i <= n; i++)
    {
        for (j = 0; j < i; j++)
        {

            for (k = j; k < i; k++)

            {
                sum += a[k];
            }

            save = save>sum ?  save : sum;

            sum = 0;

        }
    }
    cout << save << endl;
    return 0;
}


int main()
{
    int a[] = { 1, 3, 33,-5, 44, 3 };
    getmaxsum(a, 6);
    return 0;
}

#include 
using namespace std;

int Grial(int a[],int n)
{
    int sum = 0;
    int b = 0;
    for (int i = 0; i < n; i++)
    {
        if (b < 0)
            b = a[i];
        else
            b += a[i];
        if (b>sum)
            sum = b;
    }
    return sum;
}
int main()
{
    int a[] = {2,3,4,5,6,7,8,-22,1};
    cout << Grial(a,9);
    return 0;
}