// Example of 'let'
        let x = 10;
        if (true) {
            let x = 20; // Scoped to this block
            console.log(x); // Outputs: 20
        }
        console.log(x); // Outputs: 10

        // Example of 'var'
        var y = 10;
        if (true) {
            var y = 20; // Scoped to the function or global scope
            console.log(y); // Outputs: 20
        }
        console.log(y); // Outputs: 20