C - Pointers and function arguments
Pointers and function arguments
- Pointers can be passed and/or returned by functions.
- If the arguments are passed by value to functions, It is not possible for the called function to alter a variable in the calling function.
- Pointer arguments enable a function to access and change objects in the functions that called it.
- Since pointers are variables themselves, they can be stored in arrays just as other variables can.
says that lineptr is an array of MAXLINES elements, each element of which is a pointer to a char.
that is, lineptr[i] is a character pointer, and *lineptr[i] is the character it points to, the first character of the ith pointer.