Relational Expressions (Comparisons)

Relational expressions are comparative expressions that compare two other expressions/values with a specific operator. They evaluate to true if the condition of the operator is true, for example < (less than) with 1 < 5, and evaluate to false if the condition is false, for example > (greater than) with 1 > 5.

Such expressions are essential for conditional expressions that are used in statements such as:

If-statements
While-loops
Do-while-loops
For-loops

Syntax

EXP ( == | != | > | >= | < | <= ) EXP

Examples

Equal-to Operator

20 == 20; // -> true
92 == 20; // -> false

Not Equal-to Operator

21 != 9; // -> true
21 != 21; // -> false

Greater-than Operator

20 > 5; // -> true
20 > 20; // -> false

Greater-than or Equal-to Operator

11 >= 5; // -> true
20 >= 20; // -> true
32 >= 99; // -> false

Less-than Operator

10 < 78; // -> true
43 < 14; // -> false

Less-than or Equal-to Operator

12 <= 29; // -> true
56 <= 56; // -> true
21 <= 13; // -> false