Can anyone explain me abt pointer??

Answer 1

A pointer is similar to a variable in that it stores a value for later use in the execution your program. However, a pointer has further significance in that the location in computer memory is also stored along with the value...
You may ask, "Why store the location along with the value?" Because, using the pointer in subroutines versus accessing the data itself (in most cases)improves the performance and utilization of computer resources. The effect is that elapsed run time is decreased.

Answer 2

great!