C++ Comparison Operators(Relational Operators)

Comparison(Relational) operators are used to compare two values and return a boolean value indicating whether the comparison is true or false. In C++, the comparison operators are:

OperatorNameDescriptionExample
==Equal toReturns true if the values on both sides of the operator are equal, otherwise returns false5 == 5 returns true
!=Not equal toReturns true if the values on both sides of the operator are not equal, otherwise returns false5 != 5 returns false
>Greater thanReturns true if the value on the left side of the operator is greater than the value on the right side, otherwise returns false5 > 4 returns true
<Less thanReturns true if the value on the left side of the operator is less than the value on the right side, otherwise returns false5 < 4 returns false
>=Greater than or equal toReturns true if the value on the left side of the operator is greater than or equal to the value on the right side, otherwise returns false5 >= 5 returns true
<=Less than or equal toReturns true if the value on the left side of the operator is less than or equal to the value on the right side, otherwise returns false5 <= 5 returns true

Here's an example of using comparison operators in C++ code:

``````1#include <iostream>
2using namespace std;
3
4int main() {
5  int x = 5, y = 6;
6  cout << (x == y) << endl; // returns false
7  cout << (x != y) << endl; // returns true
8  cout << (x > y) << endl; // returns false
9  cout << (x < y) << endl; // returns true
10  cout << (x >= y) << endl; // returns false
11  cout << (x <= y) << endl; // returns true
12  return 0;
13}``````

As you can see, the comparison operators return either `0` (`false`) or `1` (`true`), which can be used in control structures like `if` statements to make decisions based on the result of a comparison.