What is pointer arithmetic, C/C++ Programming

Assignment Help:

Pointer Arithmetic

We can manipulate the pointers too. We can perform operations such as addition, subtraction, increment and decrement etc.,. As the pointer variables have address, adding or subtracting a number results in another address, which is at an offset from the original address. This may be memory address occupied by another variable.

e.g.

                int   i, j, k ;

                int  *iptr = &i;

                *iptr = *iptr + 2;  // I = I + 2;

                 iptr = iptr + 2 // adds 2 to address.

These are useful when using arrays.

e.g.

arr[10];

int *iptrb = &arr[0];

int *iptre = &arr[10];

While ( iptrb != iptre)

     {        

 Do something with the value if (*iptrb);

++iptrb;

}

 


Related Discussions:- What is pointer arithmetic

Stream input and output functions, Within C we access external devices by ...

Within C we access external devices by means of a pointer i.e. address. The address could point to any memory mapped device i.e. Ram, Rom, Duart, Disk drives etc. Therefore there i

Wap for basic salary of employees & calculate net salary, WAP TO ACCEPT THE...

WAP TO ACCEPT THE BASIC SALARY OF EMPLOYEES & CALCULATE NET SALARY   #include stdio.h> #include conio.h>   void main() {                    float Basi

Require flowchart, I require a flowchart for push , & pop operation on stac...

I require a flowchart for push , & pop operation on stack using array

What is some reward/drawback of using friend functions?, A: They present a ...

A: They present a degree of freedom in the interface design options. Member functions & friend functions are equally privileged (100% vested). The major difference is that a fri

Explain the working of array with strings, Explain the working of Array wit...

Explain the working of Array with Strings? A string is defined in C language as an array of characters. A null character (‘\0') is automatically added to the end of the charact

Decoding, how to decode a number from mobile keypad

how to decode a number from mobile keypad

How to write Bernoulli''s principle, compose a C program to solve the equat...

compose a C program to solve the equation z2=(p1/Pg)+(v1^2/2g)+z1 p1=100kpa,v1=2m/s z1=3m P=1000kg/m^3 define g=9.81

Pointers, In this sub-task will you implement three functions for the final...

In this sub-task will you implement three functions for the final three function prototypes that will do exactly the same as the three functions that you have just written. This ti

How does c++ help with the tradeoff of security vs.usability, A: In C, enca...

A: In C, encapsulation was completed by making things static in a compilation unit or module. It prevented another module from accessing the static stuff. (Incidentally, now static

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd