Pointer Declaration

• Pointer Declaration Syntax:

  dataType *pointerName;

  where:

  • dataType - is the data type of the variable the pointer will point to.
  • * - the asterisk (*) symbol is used to indicate that the variable is a pointer variable.
  • pointerName - is a unique identifier name for the pointer variable.
• Pointer Declaration Syntax:

  dataType *pointerName;

  where:

  • dataType - is the data type of the variable the pointer will point to.
  • * - the asterisk (*) symbol is used to indicate that the variable is a pointer variable.
  • pointerName - is a unique identifier name for the pointer variable.
• Pointer Declaration Syntax:

  dataType *pointerName;

  where:

  • dataType - is the data type of the variable the pointer will point to.
  • * - the asterisk (*) symbol is used to indicate that the variable is a pointer variable.
  • pointerName - is a unique identifier name for the pointer variable.
• Example of Pointer Declaration

  int *ptrInt; or int* ptrInt; or int * ptrInt;

  // ptrInt can point to an integer variable

  double *ptrDouble; or double* ptrDouble;

  // ptrDouble can point to a double variable

  char *ptrChar; or char* ptrChar;

  // ptrChar can point to a character variable

  string *ptrString; or string* ptrString;

  // ptrString can point to a string variable
• Example of Pointer Declaration

  int *ptrInt; or int* ptrInt; or int * ptrInt;

  // ptrInt can point to an integer variable

  double *ptrDouble; or double* ptrDouble;

  // ptrDouble can point to a double variable

  char *ptrChar; or char* ptrChar;

  // ptrChar can point to a character variable

  string *ptrString; or string* ptrString;

  // ptrString can point to a string variable
• int *ptr1, ptr2; /* ptr1 is a variable that holds an address of an integer variable, while ptr2 is a simple variable that will hold data or value. */
• int *ptr1, *ptr2; /* ptr1 and ptr2 are now variables that will hold an address of an integer variable. */
• int *ptr1, *ptr2; /* ptr1 and ptr2 are now variables that will hold an address of an integer variable. */
• int *ptr1, *ptr2; /* ptr1 and ptr2 are now variables that will hold an address of an integer variable. */
• int *ptr1, ptr2; /* ptr1 is a variable that holds an address of an integer variable, while ptr2 is a simple variable that will hold data or value. */