C++ tutorial: Arithmetic Operators (Part 3)

 :  Hi this is the 3rd part of C+++ beginner tutorial. If you did not check Part 1 and part click the following link for reading them .

For Part 1 - Just Click hereFor part 2 - Just Click here

Arithmetic operator :

There are five arithmetic operators which are used in C++ programming. They are:

For doing basic arithmetic through C++, you need to know about the functions of these arithmetic operators.

The function of all operators does same as those are used in mathematics, except modulus (%) operator. It is used for finding the reminder.

Reminder example:

#include <iostream>

using namespace std;

int main()

{

     int x;

     int z;

     int reminder;

     int y;

     cout <<"enter a number = ";

     cin >> x;

     cout <<" enter another number by which you are going to divide = ";

     cin >>z;

     y = x / z;

     reminder = x % z;

     cout << " after division = " << y <<endl;

     cout << " reminder = "<<reminder <<endl;

     return 0;

}

and the output will be…

·       Compound assignment:

Compound assignments are simply the short form of some arithmetic operators. Some of the compound assignments are given below:

Expression	Equivalent to
A += 5	A = A + 5
A - = 5	A = A – 5
A *= 5	A = A * 5
A /= 5	A = A / 5
A %= 5	A = A % 5
A >>= 5	A = A >> 5
A <<= 5	A = A << 5

Example program:

#include <iostream>

using namespace std;

int main ()

{

       int a;

       int b;

       cout << "enter a number = ";

       cin >>a;

       a +=2;

       b =a;

       cout << b;

       return 0 ;

}

And the output will be…

·       Increase and decrease:

Shortening even more some expressions, the increase operator (++) and the decrease operator (--) increase or reduce by one the value stored in a variable. They are equivalent to +=1 and to -=1, respectively.

Expression	Equivalent to
A++ or ++A	A = A + 1
A - - or - - A	A = A - 1

Example program:

#include <iostream>

using namespace std;

int main ()

{

       int a;

       cout << "enter a number = ";

       cin >>a;

       a++;

       cout << a << endl;

       return 0 ;

}

And the output will be…

·       Rational and equality operators:

To evaluate a comparison between two expressions we can use the rational and equality operators.

Expressions	Meaning
==	Equal to
!=	Not equal to
>	Greater than
<	Less than
>=	Greater than or equal to
<=	Less than or equal to

If you have Microsoft Visual C++ or any other compiler installed in your computer, you can just check the above programs.

Reminder.(cpp)

Compound_assign.(cpp)

Increase_decrease.(cpp)

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