Sample Code for Operators

Arithmetic Operators

#include <iostream>
using namespace std;
 
main()
{
   int a = 21;
   int b = 10;
   int c ;
 
   c = a + b;
   cout << "Line 1 - Value of c is :" << c << endl ;
   c = a - b;
   cout << "Line 2 - Value of c is  :" << c << endl ;
   c = a * b;
   cout << "Line 3 - Value of c is :" << c << endl ;
   c = a / b;
   cout << "Line 4 - Value of c is  :" << c << endl ;
   c = a % b;
   cout << "Line 5 - Value of c is  :" << c << endl ;
   c = a++; 
   cout << "Line 6 - Value of c is :" << c << endl ;
   c = a--; 
   cout << "Line 7 - Value of c is  :" << c << endl ;
   return 0;
}

When the above code is compiled and executed, it produces the following result:

Line 1 - Value of c is :31
Line 2 - Value of c is  :11
Line 3 - Value of c is :210
Line 4 - Value of c is  :2
Line 5 - Value of c is  :1
Line 6 - Value of c is :21
Line 7 - Value of c is  :22

Relational Operators

#include <iostream>
using namespace std;

main()
{
   int a = 21;
   int b = 10;
   int c ;

   if( a == b )
   {
      cout << "Line 1 - a is equal to b" << endl ;
   }
   else
   {
      cout << "Line 1 - a is not equal to b" << endl ;
   }
   if ( a < b )
   {
      cout << "Line 2 - a is less than b" << endl ;
   }
   else
   {
      cout << "Line 2 - a is not less than b" << endl ;
   }
   if ( a > b )
   {
      cout << "Line 3 - a is greater than b" << endl ;
   }
   else
   {
      cout << "Line 3 - a is not greater than b" << endl ;
   }
   /* Let's change the values of a and b */
   a = 5;
   b = 20;
   if ( a <= b )
   {
      cout << "Line 4 - a is either less than \
                                    or euqal to  b" << endl ;
   }
   if ( b >= a )
   {
      cout << "Line 5 - b is either greater than \
                                    or equal to b" << endl ;
   }
   return 0;
}

When the above code is compiled and executed, it produces the following result:

Line 1 - a is not equal to b
Line 2 - a is not less than b
Line 3 - a is greater than b
Line 4 - a is either less than or euqal to  b
Line 5 - b is either greater than or equal to b