What are pointers? How do we use pointers to different data types?

==> POINTERS--

• A pointer is a variable which contains the address in memory of another variable.
• Pointers are the variables that are used to store the location of value present in the memory

       Declaration :

                             data_type *variable_name;

                              Ex : int *a;

                  Ex :

                         #include int main()

                         {

                            int var = 20;

                            int *ip;

                            ip=&var;

                            printf(“Address of variable is %x ”, &var);

                            printf(“Address stored in ip variable is :%x”,ip);

                            printf(“value of *ip variable : %d”, *ip);

                            return 0;

                         }