What is pointer & why it is used?

1.	What is pointer & why it is used?
Answer» The pointer is nothing but a variable that stores and points the address or location of a different variable. While a regular variable stores the VALUE of a variable, a pointer variable stores the address or location of a variable. Why it is used? You can USE pointers in a C program for getting the location of a variable, or for achieving pass by call reference. This is because pointers ALLOW various functions to modify and share the local variables. You can ALSO use a pointer for implementing “linked” data structures, such as lists and binary trees. Have you read our REST of the Interview Questions on C?

Answer»

The pointer is nothing but a variable that stores and points the address or location of a different variable. While a regular variable stores the VALUE of a variable, a pointer variable stores the address or location of a variable.

Why it is used?

You can USE pointers in a C program for getting the location of a variable, or for achieving pass by call reference. This is because pointers ALLOW various functions to modify and share the local variables. You can ALSO use a pointer for implementing “linked” data structures, such as lists and binary trees. Have you read our REST of the Interview Questions on C?

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