C ++
C ++ strpbrk () - C ++ Pustaka Standar
C ++ strstr () - C ++ Standard Library
C ++ strrchr () - C ++ Pustaka Standar
C ++ strcspn () - C ++ Pustaka Standar
C ++ strspn () - C ++ Standard Library
rumus
Rumus Excel: Luas trapesium -