C++，程序为什么出现“该内存不能为 Read”，完全不能运行

#include <iostream>
using namespace std;

int main()
{
    const int A[4][4] = { {  1,  2,  3,  4 }
                        , {  5,  6,  7,  8 }
                        , {  9, 10, 11, 12 }
                        , { 13, 14, 15, 16 } };

    ////////////////////////////////////

    const size_t rsize = sizeof(A)/sizeof(A[0]);
    const size_t csize = sizeof(A[0])/sizeof(A[0][0]);

    for( size_t r=0; r!=rsize; ++r )
    {
        size_t c = 0;
        for( size_t i=1; i!=csize; ++i )
        {
            if( A[r][i] < A[r][c] )
                c = i;
        }

        size_t j;
        for( j=0; j!=rsize && A[j][c]>=A[r][c]; ++j );

        if( j == rsize )
            cout << "A[" << r << "][" << c << "] = " << A[r][c] << '\n';
    }
    cout << flush;

    return 0;
}