switch/case with numeric range

int i = 63;

switch (i)
{
    case int n when (n >= 100):
        Console.WriteLine($"I am 100 or above: {n}");
        break;

    case int n when (n < 100 && n >= 50 ):
        Console.WriteLine($"I am between 99 and 50: {n}");
        break;

    case int n when (n < 50):
        Console.WriteLine($"I am less than 50: {n}");
        break;
}function getCategory(age) {  
    var category = "";  
    switch (true) {  
        case isNaN(age):  
            category = "not an age";  
            break;  
        case (age >= 50):  
            category = "Old";  
            break;  
        case (age <= 20):  
            category = "Baby";  
            break;  
        default:  
            category = "Young";  
            break;  
    };  
    return category;  
}  
getCategory(5);  // will return "Baby"