sicily 1926

class NumCal {
int *p;    // 数组首地址
int size; // 数组size
public:
int sum(); // 计算数组元素和
NumCal(); // 构造函数
NumCal(int *new_p, int new_size); // 构造函数
};

int NumCal::sum()
{
int ans = 0;
for (int i = 0; i < size; i++)
ans += p[i];
return ans;
}

NumCal::NumCal()
{
p = 0;
size = 0;
}

NumCal::NumCal(int *new_p, int new_size)
{
p = new int[new_size];
size = new_size;
for (int i = 0; i < size; i++)
p[i] = new_p[i];
}