Theory Lecture - C – Pointers BASIC PART 1 || Learning C Programming || For Beginners || #C223

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KEY POINTS TO REMEMBER ABOUT POINTERS IN C:

• Normal variable stores the value whereas pointer variable stores the address of the variable.
• The content of the C pointer always be a whole number i.e. address.
• Always C pointer is initialized to null, i.e. int *p = null.
• The value of null pointer is 0.
• & symbol is used to get the address of the variable.
• * symbol is used to get the value of the variable that the pointer is pointing to.
• If a pointer in C is assigned to NULL, it means it is pointing to nothing.
• Two pointers can be subtracted to know how many elements are available between these two pointers.
• But, Pointer addition, multiplication, division are not allowed.
• The size of any pointer is 2 byte (for 16 bit compiler).

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POINTERS
POINTERS IN C
stores the address
null pointer
C – Pointers
ampersand
asterisk
pointer to an integer
pointer to a double
pointer to a float
pointer to a character
Pointer arithmetic
Array of pointers
Pointer to pointer
pointers to functions
Return pointer
sub