动态创建二维数组

利用数组指针

char(*c)[5];
try{c = new char[n][5];}
catch(bad_alloc)
{
cerr<<"Out of Memory"<<endl;
exit(1);
}

c

利用指针的指针

try
{
char **x = new char *[numberOfRows];
for(int i=0;i<numberOfRows;i++)
x[i] = new char[numberOfColumns];
return true;
}
catch(bad_alloc)
{
return false;
}

//delete
//删除行数组空间
for(int i=0;i<numberOfRows;i++)
delete [] x[i];
//删除行指针
delete []x;
x=NULL;