Try 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 <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 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