//illustrates the dangling else problem
//If you have two if statements and one else and don't use { } blocks
//the else will always be associated with the inner if statement
//9/12/18
#include <iostream>
using namespace std;
int main()
{
int x, y ;
cout << "Enter values for integers x and y ";
cin >> x >> y;

//First nested if structure
cout << "Output from the first nested if structure\n";
if ( x < 10 )
    if ( y > 10 )
        cout << x << " " << y << "*****" << endl;
 //whether indented or not, this else matches with the inner if statement
 //so it should be indented
else
    cout << x << " " << y << "#####" << endl;

//Second nested if structure
cout << "\nOutput from the second nested if structure\n";
if ( x < 10 )
    if ( y > 10 )
        cout << x << " " << y << "*****" << endl;
    else  //this else block is also matched with the inner if statement
    {
        cout << x << " " << y<< "%%%%%" << endl;
        cout << "&&&&&" << endl;
    }
//Third nested if structure
cout << "\nOutput from the third nested if structure\n";
if ( x < 10 )
{
    if ( y > 10 )
        cout << x << " " << y<< "*****" << endl;
}   //end outer if block
//the else block matches the outer if statement because we
//used a block in the outer if statement body
else
{
    cout << x << " " << y << endl << "^^^^^" << endl;
    cout << "@@@@@" << endl;
} //end if-else block
    return 1;
}    //end main()

/*  First run
Enter values for integers x and y 9 11
Output from the first nested if structure
9 11*****

Output from the second nested if structure
9 11*****

Output from the third nested if structure
9 11*****

Process returned 1 (0x1)   execution time : 3.557 s
Press any key to continue.
*/

/* second run
Enter values for integers x and y 11 9
Output from the first nested if structure

Output from the second nested if structure

Output from the third nested if structure
11 9
^^^^^
@@@@@

Process returned 1 (0x1)   execution time : 6.287 s
Press any key to continue.
*/
/*
Third run
Enter values for integers x and y 9 9
Output from the first nested if structure
9 9#####

Output from the second nested if structure
9 9%%%%%
&&&&&

Output from the third nested if structure

Process returned 1 (0x1)   execution time : 2.543 s
Press any key to continue.
*/

/*Fourth run
Enter values for integers x and y 11 11
Output from the first nested if structure

Output from the second nested if structure

Output from the third nested if structure
11 11
^^^^^
@@@@@

Process returned 1 (0x1)   execution time : 3.136 s
Press any key to continue.
*/