why does there code use else if

Question about the task

Quadrants

Java Syntax, Level 3, Lesson 8

Under discussion

I used the if operator like if() { } if if if why use the else if operator like there example my code ran fine

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Thomas

Level 41 , Bayreuth, Germany

2 July 2023, 07:53

There are different reasons. The first is performance. As soon as a condition matches the following else if conditions don't get evaluated anymore. When you just use if conditions all need to get evaluated. Second it can make the conditions easier

BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
int num = Integer.parseInt(console.readLine());

System.out.println("if - else if - else");
if (num > 10)
    System.out.println("> 10");
else if (num > 5)
    System.out.println("> 5");
else
    System.out.println("<= 5");


System.out.println("\njust if");
if (num > 10)
    System.out.println("> 10");
if (num > 5 && num <= 10)
    System.out.println("> 5");
if (num <= 5)
    System.out.println("<= 5");