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Conditional operator ( ? )


The conditional operator evaluates an expression returning a value if that expression is true and a different one if
the expression is evaluated as false. Its format is:

condition ? result1 : result2
If condition is true the expression will return result1, if it is not it will return result2.
7==5 ? 4 : 3     // returns 3, since 7 is not equal to 5.
7==5+2 ? 4 : 3   // returns 4, since 7 is equal to 5+2.
5>3 ? a : b      // returns the value of a, since 5 is greater than 3.
a>b ? a : b      // returns whichever is greater, a or b.


 Conditional operator

#include <iostream>
using namespace std;
int main ()
{
  int a,b,c;
  a=2;
  b=7;
  c = (a>b) ? a : b;
  cout << c;
  return 0;
}

In this example a was 2 and b was 7, so the expression being evaluated (a>b) was not true, thus the first value
specified after the  question mark was discarded in favor of the second value (the one after the colon) which was b,
with a value of 7.
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