Relational Operators

Example:

Try the following example to understand all the relational operators available in C++.

Copy and paste the following C++ program in test.cpp file and compile and run this program.

#include <constream.h>


int 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

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