C++指针数组问题

Question

*a=(int **)malloc(m*sizeof(char *));
这句话用c++的new该怎么写？
抱歉写错了，应该是
a=(int **)malloc(m*sizeof(int *));

Answer 1

char *pCh = new char[5000];.....delete []pCh;

Answer 2

*a = reinterpret_cast<int**>(new char*[m]);