模板二维数组

最新推荐文章于 2024-11-11 22:07:06 发布

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#include <iostream>
#include <cassert>
using namespace std;

template <class T,size_t SIZE1,size_t SIZE2>
class Array2D{
public:
    template<class T, size_t SIZE>
    class Array1D{
    public:
        T& operator[](size_t index){
            assert(index < SIZE2);
            return m_a[index];
        }
        const T& operator[](size_t index)const{
            assert(index < SIZE2);
            return m_a[index];
        }
    private:
        T m_a[SIZE];
    };

    Array1D<T, SIZE2>& operator[](size_t index){
        assert(index < SIZE1);
        return m_a1D[index];
    }
    const Array1D<T, SIZE2>& operator[](size_t index)const{
        assert(index < SIZE1);
        return m_a1D[index];
    }
private:
    Array1D<T,SIZE2> m_a1D[SIZE1];
};
int main(){
    int i = 900;
    Array2D<int, 2, 2> a;
    a[1][1] = 900;
    a[0][0] = a[1][1];
    cout << a[0][0] << endl;

    const Array2D<int, 2, 2> b; 
    cout << b[1][1] << endl;

    return 0;
}