pointer in c programming for second semester

pointer in c programming for second semester

• 1.
  Pointers in C Introduction,Types, and Function Usage
• 2.
  Introduction to Pointers •• A pointer is a variable that stores the address of another variable. • • Provides direct access to memory. • • Useful for dynamic memory, arrays, and functions.
• 3.
  Declaring Pointer Variables •• Syntax: data_type *pointer_name; • • Example: • int *ptr; • char *cptr; • • '*' is used to declare a pointer.
• 4.
  Types of Pointers •• NULL Pointer • • Void Pointer • • Wild Pointer • • Dangling Pointer • • Function Pointer • • Pointer to Pointer
• 5.
  Passing Arguments usingPointers • • Functions can accept pointers as arguments. • • Allows modification of actual variables. • • Example: • void swap(int *a, int *b) { • int temp = *a; • *a = *b; • *b = temp; • }