please write Cpp dont copy with chatgpt and dont use this function

returnPASSED: recursiveLargestValue$($list$1->$head$)$

$-$ FAILED: recursiveLargestValue$($list$2->$head$)$

$?^^^^^^$

$+$ PASSED: recursiveLargestValue$($list$2->$head$)$

$?^^^$

$-$ Expected: $-4$ Actual: $0$

PASSED: recursiveLargestValue$($list$3->$head$)$

PASSED: recursiveLargestValue$($list$4->$head$)($head$->$data $>=$ nextdata$)?$ head$->$data : nextdata;