Conditional Operator

[RiHdz1]

// Enter 2 numbers. Program should use CONDITIONAL OPERATOR to determine which
// is larger and which is smaller. Need help. Tony Gaddis book does not go into
// this very much at all.
#include <iostream>
using namespace std;

int main(int argc, const char * argv[])
{
int num_1, num_2, x;

cout << "Enter a number: " << endl;
cin >> num_1;

cout << "Enter another number: " << endl;
cin >> num_2;
// Need to use CONDITIONAL OPERATOR, does not work
(num_1 > num_2) ? (num_1 = x) : (num_2 = x);

cout << x << " is the larger number" << endl;

// Conditional Operator not used, but this works
/*if (num_1 > num_2)
cout << num_1 << " is the larger number." << endl;

else if (num_2 > num_1)
cout << num_2 << " is the larger number." << endl;

else
cout << "The numbers are equal." << endl;*/



return 0;
}

[giblit]

Please use code tags around your code. You can either press the <> button or put [ code] before and [ /code] after (without the space) example:

[code]int main()
{
     return 0;
}[/code]

would look like

int main()
{
    return 0;
}

normally you would do something like

some_variable = conditon ? value1 : value2;

Also you have your assignment backwards. In math would you do num_1 = x to assign a value to x? No, you would do x = ... To use the ternary operator you would do x = num_1 > num_2 ? num_1 : num_2; which is the same as

if(num_1 > num_2)
{
    x = num_1;
}
else
{
    x = num_2;
}

[Yay295]

You're doing it backwards.
(num_1 > num_2) ? (num_1 = x) : (num_2 = x);
should be
num_1 > num_2 ? x = num_1 : x = num_2;

[giblit]

@yay295 he is doing it backward but, there is also no need for the x = when getting to the true/false parts. That should be at the front of the expression. It should look like x = num_1 > num_2 ? num_1 : num_2;

[Yay295]

Good point. I had actually just been thinking he could do cout << ( num_1 > num_2 ? num_1 : num_2 ); but I didn't think to apply that to setting x.

[RiHdz1]

Thanks you so much. Ive been stuck on this for weeks. It worked! The book I'm using doesn't go into detail on conditional operators.

[giblit]

You're welcome. Check out the bottom of this page for more in depth information: http://www.cplusplus.com/doc/tutorial/operators/