//Do not declare variable marks.
//Write your code below this line.
 if (condition) {
        //block of code if condition is true
} else if (condition_2) {
        //block of code if condition is false and condition_2 is true.
} else if (condition_3) {
        //block of code if condition is false and condition_2 is false and condition_3 is true.
} else {
        //block of code if none of the condition(s) is true.
}
if (time < 12) {
    console.log("Good morning");
} else if (time < 14) {
    console.log("Good Afternoon");
} else {
    console.log("Good evening");
}