// CS 1621 Fall 2005
// Example of C++ reliability problem due to ease with which a logic
// error can be made by mistakenly using the assignment operator
// rather than the comparison operator

#include <iostream>
using namespace std;

int main()
{
     int num;
     cout << "Please enter a one or a two:";
     cin >> num;
     if (num = 1)  // Expression is legal but not what programmer intended
        cout << "You entered one" << endl;
     else
        cout << "You entered two" << endl;

     return 0;
}