After entering data and pressing "enter", console window disappears

I wrote a fairly simple programme:

Code:

---

#include <iostream>

int main()

{
    using namespace std;
   
    int books; // declares variable "books"
   
    cout << "how many books do you have?" << endl; // displays the first line
    cin >> books; // input a number
    cout << "here are 100 more." << endl; // displays the second line
    books=books+100; // adds 100 to the variable "books"
    cout << "now you have " << books << " books." << endl;
    //displays the third line with the changed variable "books"
   
    cin.get();
    return 0;
}

---

It successfully compiled. When run, it correctly displays the first line:

how many books do you have?

Then I entered a random number, like 500. I pressed "enter" then the console window immediately disappeared.

My IDE is dev c++, OS is windows xp service pack 2

Look in the FAQ about "my window disappears" or some such title.

--
Mats

once you fully understand why you have put

Code:

---

    cin.get();

---

at the end of main(), you will understand why it fails in this case.
Kurt

I put

Code:

---

system ("pause");

---

instead of cin.get();

It worked.

System pause is unportable, so avoid that.
Better to just use a proper IDE that supports not closing the window or use two or maybe three cin.get() rather than system pause.

Quote:

---

System pause is unportable, so avoid that.

---

True, but the thing is, you don't need to do this in anything other than Windoze. No other OS that I know of closes the terminal when a program quits.

Maybe something like this?

Code:

---

#ifdef _WIN32
system("pause");
#endif

---

But of course, there is a security risk associated with doing it this way, too, since the working directory is in $PATH in Windoze, and worse still, it precedes everything else. (if someone wrote a malicious program and name it pause.exe and put it into your working directory, it will be executed instead of the system's pause.exe)