What are arithmetic and relational operators? What is difference between arithmetic and relational operators with examples?

Arithmetic and Relational operators

Arithmetic Operators

Following are the basic Arithmetic operators used in C/C++:

i) + (Addition)

ii) - (Subtraction)

iii) * (Multiplication)

iv) / (Division)

Apart from the specified basic operators, there are some other operators used in C/C++, and are

v) % (Remainder or Modulus)

vi) ++ (Increment)

vii) -- (Decrement)

viii) += (Increment Assignment)

ix) -= (Decrement Assignment)

x) *= (Multiplication Assignment)

xi) /= (Division Assignment)

xii) %= (Remainder Assignment)

• Increment and Decrement operators can be used in two ways, i.e.

i) Prefix

§  ++var, --var

ii) Postfix

§  Var++, var--

• Increment and Decrement operators can be used in two ways, i.e.

i) Prefix

§  ++var, --var

ii) Postfix

§  Var++, var--

 

Basic operators

#include <iostream.h>

#include <conio.h>

void main(void)

{

clrscr();

int a=5,b=2;

cout<<"A = 5 and B = 2"<<endl<<endl;

cout<<a<<" + "<<b<<" = "<<a+b<<endl;

cout<<a<<" - "<<b<<" = "<<a-b<<endl;

cout<<a<<" x "<<b<<" = "<<a*b<<endl;

cout<<a<<" / "<<b<<" = "<<a/b<<endl;

cout<<a<<" % "<<b<<" = "<<a%b;

getch();

}

Other operators

#include <iostream.h>

#include <conio.h>

void main(void)

{          

clrscr();

int a=5,b=2;

a+=b;

cout<<"a += b means value of a is "<<a<<endl;

a=5,b=2;

a-=b;

cout<<"a -= b means value of a is "<<a<<endl;

a=5,b=2;

a*=b;

cout<<"a *= b means value of a is "<<a<<endl;

a=5,b=2;

a/=b;

cout<<"a /= b means value of a is "<<a<<endl;

a=5,b=2;

a%=b;

cout<<"a %= b means value of a is "<<a<<endl;

getch();

}

Prefix – Postfix

#include <iostream.h>

#include <conio.h>

void main(void)

{

clrscr();

int a=5;

cout<<"Value of A now is "<<a<<endl<<endl;

cout<<"Prefix operator ++a gives "<<++a<<endl;

cout<<"Value of a after Prefix is "<<a<<endl<<endl;

cout<<"Postfix operator a++ gives "<<a++<<endl;

cout<<"Value of a after Postfix "<<a<<endl<<endl;

getch();

}

Relational Operators

A relational operator compares two values. Comparisons involved in relation operators can be

i) < Less than

ii) > Greater than

iii) == Equals to

iv) != Not equals

v) <= Less than or equals

vi) >= Greater than or equals 

The result of comparison is either True or False. If a comparison provides 1, it means True and if it provides 0, it means False.

#include <iostream.h>

#include <conio.h>

void main(void)

{

clrscr();

int number;

cout<<"Enter a Number ";

cin>>number;

cout<<"number < 10 = "<<(number<10)<<endl;

cout<<"number > 10 = "<<(number>10)<<endl;

cout<<"number == 10 = "<<(number==10)<<endl;

getch();

}

Using Library Functions

#include <iostream.h>

#include <conio.h>

#include <math.h>

void main(void)

{

clrscr();

int a;

cout<<"Enter a value ";

cin>>a;

cout<<"Square Root of "<<a<<" is "<<sqrt(a);

getch();

}