Pointer In C

               Pointer In C



Pointers in C language is a variable that stores/points the address of another variable.
A Pointer in C is used to allocate memory dynamically /p>
i.e. at run time. The pointer variable might be belonging to /p>
any of the data type such as int, float, char, double, short etc /p>
Normal variable stores the value whereas pointer variable stores the address of the variable. /p>
The content of the C pointer always be a whole number i.e. address. /p>
Always C pointer is initialized to null, i.e. int *p = null./p>
The value of null pointer is 0.

Example:

#include < stdio.h >
int main()
{
   int *ptr, q;
   q = 50;
   /* address of q is assigned to ptr */
   ptr = &q;
   /* display q's value using ptr variable */
   printf("%d", *ptr);
   return 0;
}




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