microsoft/qdk

// # Sample
// Comparison Operators
//
// # Description
// Comparison operators in Q# are used to compare one value relative to
// another value of the same type, producing an output Boolean value.
// The comparison operators in Q# are `==`, `!=`, `<`, `<=`, `>`, and `>=`.

function Main() : Unit {

    // `==` tests if the first value is equivalent to the second value.

    // The Boolean value `true`.
    let boolean = 4 == 4;
    Message($"Equality comparison: {boolean}");

    // The Boolean value `false`.
    let boolean = 4 == 6;
    Message($"Equality comparison: {boolean}");

    // `!=` tests if the first value is not equivalent to the second value.
    // It is the opposite of `==`.

    // The Boolean value `false`.
    let boolean = 4 != 4;
    Message($"Inequality comparison: {boolean}");

    // The Boolean value `true`.
    let boolean = 4 != 6;
    Message($"Inequality comparison: {boolean}");

    // `<` tests if the first value is strictly less than the second value.

    // The Boolean value `false`.
    let boolean = 4 < 4;
    Message($"Less than comparison: {boolean}");

    // The Boolean value `true`.
    let boolean = 4 < 6;
    Message($"Less than comparison: {boolean}");

    // The Boolean value `false`.
    let boolean = 6 < 4;
    Message($"Less than comparison: {boolean}");

    // `<=` tests if the first value is less than or equivalent to
    // the second value.

    // The Boolean value `true`.
    let boolean = 4 <= 4;
    Message($"Less than or equal comparison: {boolean}");

    // The Boolean value `true`.
    let boolean = 4 <= 6;
    Message($"Less than or equal comparison: {boolean}");

    // The Boolean value `false`.
    let boolean = 6 <= 4;
    Message($"Less than or equal comparison: {boolean}");

    // `>` tests if the first value is strictly greater than the second value.

    // The Boolean value `false`.
    let boolean = 4 > 4;
    Message($"Greater than comparison: {boolean}");

    // The Boolean value `false`.
    let boolean = 4 > 6;
    Message($"Greater than comparison: {boolean}");

    // The Boolean value `true`.
    let boolean = 6 > 4;
    Message($"Greater than comparison: {boolean}");

    // `>=` tests if the first value is greater than or equivalent to
    // the second value.

    // The Boolean value `true`.
    let boolean = 4 >= 4;
    Message($"Greater than or equal comparison: {boolean}");

    // The Boolean value `false`.
    let boolean = 4 >= 6;
    Message($"Greater than or equal comparison: {boolean}");

    // The Boolean value `true`.
    let boolean = 6 >= 4;
    Message($"Greater than or equal comparison: {boolean}");
}