C++ Multiple statements for conditional operator -

i'm trying use conditional statement 1 thing in 1 condition 2 things if other condition applies.

consider following:

 ( h >= 0 && h < 24 ? hour = h : hour = 0, cout << "invalid hour detected\n") 

if "h" set 25, sets "hour" 0 correctly. if "h" set 12, correctly sets "hour" 12.

the problem outputs "invalid hour detected" both true , false conditions. want output if conditions aren't met.

essentially, i'm wondering if possible in conditional statement 2 things 1 condition.

also tried:

( h >= 0 && h < 24 ? hour = h : hour = 0 && cout << "invalid hour detected\n") 

but didn't run cout on either case.

if really want this, add proper parentheses , invert order of assignment , output insertion (when using comma operator, value of left expression discarded):

( h >= 0 && h < 24 ) ? ( hour = h ) : (std::cout << "invalid hour detected\n", hour = 0); 

however, advice make code readable , abandon kind of coding style.