PPT dia

using namespace std;

enum status {norm, abnorm};

const char SVJ='\n';

class B{...};

B::B(const char* fn): ... {}

void B::open() {...}

void B::read(status& sb, int& db) {...}

struct Rec{...};

class A{...};

A::A(const char* fn): ... {}

void A::open() {...}

void A::read(status& sa, Rec& da) {...}

int main(int argc, char *argv[]) {...}