C / C++ / MFC

Youming Lee wrote:

char **ptr_alph = (char **)malloc(wordCount * sizeof(char *)); /*here,have a problerm.can't calculate the expression.i don't know why. */

ptr_alph = (char **)malloc(wordCount * sizeof(char *))",compileer shows the error. where can i put the photo of the screenshot?or email to you .i am afraid i can't tell the problerm. or it may be caused by another error.

class A
{
  int id;
  string a;
  string b;
  std::map<int, Apart *> aparts;
};
std::map<int, A*> As;

A *AnA = new A;
AnA->aparts.insert(std::pair<int, Apart *>(5, new Apart));
As.insert(std::pair<int, A*>(3, AnA);

std::map<int, A*>::iterator AIT = As.find(5);
A *AnA = (*AIT).second;
std::map<int, Apart *>::iterator ApartIT = AnA->aparts.find(3);
Apart *AnApart = (*ApartIT).second;

Code-o-mat wrote:

> The problem with computers is that they do what you tell them to do and not what you want them to do. <

struct Apart { // declare the basic structs before the compounds!
   std::string c; // *see below
   std::string d;
   int a;
   int b;
};
struct A {
   int id;
   std::string a;
   std::string b;
   int nparts;   // to store the size of the array below
   Apart* parts; // array of parts
};
void initializeA(A& myA, int number_of_parts) {
   myA.nparts = 0; // in case something goes wrong
   if (myA.parts = new Apart[number_of_parts]) {
      myA.nparts = number_of_parts;
      // do any further initialization if needed
   }
}