How do I declare a variable in a scope?

Question

#include <iostream>

#include <string>

#include <vector>

#include <fstream>

using namespce std;

in main () {

              variable = (condition)? true : false

              int  largestNum = ( 5 . 2 ) ? 5 :  2;

              return 0;

}

Answer 1

"variable = (condition)? true : false" this is syntax.

And below is example of it. Where "largestNum" is variable declared of "int" type.

int  largestNum = ( 5 . 2 ) ? 5 :  2;