Because while loops often rely on test expressions that make comparisons, comparison expressions merit a closer look. Such expressions are termed relational expressions, and the operators that appear in them are called relational operators. You have used several already, and Table 6.1 gives a complete list of C relational operators. This table pretty much covers all the possibilities for numerical relationships. (Numbers, even complex ones, are less complex than humans.)
|<||Is less than|
|<=||Is less than or equal to|
|==||Is equal to|
|>=||Is greater than or equal to|
|>||Is greater than|
|!=||Is not equal to|
The relational operators are used to form ...