Pointers in C

  Pointers in C is used to hold address of other variables. Thus pointer is a way to access the data in an indirect manner. For example consider the program fragment given below.

                            int data=10;  // data is an integer variable.
                            int *ptr;      // ptr is a pointer which can hold the address of an integer variable
                            p=&a;     // & is used to get the address of variable data.
Now we can access the content of data using either data itself or the pointer variable ptr.

                            printf("%d",*ptr);  // will print 10.
                            printf("%d",data); // will print 10.

The content of variable data is accessed by using *ptr, which gives the content of the address in ptr.

Click here to download C Programs illustrating the working of pointers.

• Program 1
• Program 2