C ++
C ++ isdigit () - C ++ Standard Library
C ++ isalpha () - C ++ Standard Library
C ++ qsort () - C ++ Pustaka Standar
C ++ cstdlib abs () - C ++ Pustaka Standar
C ++ strerror () - C ++ Standard Library
C ++ modf () - C ++ Pustaka Standar
