Boolean

Comparison operators compare two values and produce a boolean result — either true or false. They are used to build conditions in if/else statements, loops, and anywhere a decision needs to be made.

For a broader introduction to operators, see Operators.

Operators#

Examples#

int score = 7;

Console.WriteLine(score == 10);  // false
Console.WriteLine(score != 10);  // true
Console.WriteLine(score > 5);    // true
Console.WriteLine(score < 5);    // false
Console.WriteLine(score >= 7);   // true
Console.WriteLine(score <= 6);   // false

score = 7

print(score == 10)  # False
print(score != 10)  # True
print(score > 5)    # True
print(score < 5)    # False
print(score >= 7)   # True
print(score <= 6)   # False

let score = 7;

console.log(score === 10);  // false
console.log(score !== 10);  // true
console.log(score > 5);     // true
console.log(score < 5);     // false
console.log(score >= 7);    // true
console.log(score <= 6);    // false

A data type tells the program what kind of value something is and what can be done with it. Every value in a program has a type, and the type determines how the program stores and works with it.

For example, the number 42 and the text "42" look similar, but they are different types. You can add two numbers together, but adding two pieces of text just joins them into a longer string.

Logical operators combine or invert boolean conditions. They are used to build compound conditions — checks that require more than one thing to be true at the same time, or where either of two things being true is enough.

For a broader introduction to operators, see Operators.

AND#

The AND operator returns true only when both conditions are true. If either is false, the result is false.

int score = 7;
bool result = score > 5 && score < 10;  // true

score = 7
result = score > 5 and score < 10  # True

let score = 7;
let result = score > 5 && score < 10;  // true

OR#

The OR operator returns true when at least one condition is true. It only returns false when both are false.