please convert this code into c++ and explain every line to as to what it does thank you.

CODE: ; read the velocity (princ "Enter Velocity (m/s) (setq v (read)) ; read the temperature value (princ "Enter Temperature (degree Celsius) :") (setq te (read)) ;Compute the index term by temp (setq ti (* 10 (sqrt v))) (setq t2 (- tl v)) (setq t3 (+ t2 10.5)) (setq t4 (-33 te)) (setq t5 (* t3 t4)) (setq t6 (/ t5 23.1)) (setq Index (- 33 t6)). (princ "Wind Chill Index(in defree Celsius): ") (write Index)