Pointer-5 Pointer Scale factor & increments

Pointer Scale Factor and Increments :

Variables of different type will take different amount of memory. Like, 
            Data type   Byte Bits
               short int    2      16         
unsigned short int    2      16   
         unsigned int    4      32  
                        int    4      32  
                 long int    4      32  
           signed char    1      08  
        unsigned char    1     08  
                      float    4      32
                   double    8      64
            long double   12    96

Depends on OS and hardware the number bytes required may get vary. 

int a=10;
int *p=&a;

In the above two statements,memory address of a is stored into the pointer variable. Say variable 'a' is stored at 1030 memory address. Hence pointer 'p' holds 1030. If we increment value of pointer like

p++; 

then pointer will point to next memory location 1034. We will be able to access value present at 1034. Similarly, 

p=p+5;

makes pointer 'p' to point 1050(assuming 1030 as initial address) i.e. p=1030 + 5*4. This is the way how pointer get effected.