Question

I created simple code in MVS2010 but it doesn’t work.

There is just a class with header file and main.

Could you tell me what is wrong?

Main:

#include <iostream>
#include "Developer.h"


int main() {

    Developer xx("asd", "sfdasdf", "asdsa");
    std::cout << xx.Dev_ID;
    char c;
    std::cin >> c;
    return 0;
}

Header:

class Developer {
public:
    char * Dev_ID;
    char * Dev_Name;
    char * ApplicationType;
    char * Name_Application;

public:
    Developer(char * name, char * appType, char * appName);
    void create();
    void edit();
    void remove();
};

Class:

#include "Developer.h"

Developer::Developer(char * name, char * appType, char * appName){}
void Developer::create(){}
void Developer::edit(){}
void Developer::remove(){}

Answer 1

When I run my app it gives an unhandled exceptions and crashes…

Of course it does. Your constructor doesn’t fill in any of the member variables. So xx.Dev_ID is undefined; it contains random garbage. When you attempt to std::cout random garbage, the program rightly crashes.

You probably intend to initialize Dev_ID to some value. You need to do that in the constructor. That’s what the constructor is for: initializing member variables.

As Chethan stated, you need to look through some basic C++ books.