Question

I’m currently writing a program where the user must input 10 numbers and then the output will be the highest number and the lowest number. There is something wrong in my code but couldn’t find it.

int highest=0, lowest=0, num=0;
Scanner scan = new Scanner(System.in);

for (int i=0; i<10; i++) {
    System.out.print("Enter a number:");
    num = scan.nextInt();
}

if (num > highest) {           
    highest = num;
}         
else if(num < lowest) {             
    lowest = num;
}

System.out.println("Highest number is: " + highest);
System.out.println("Lowest number is: " + lowest);

Answer 1

Initialise your values differently:

int highest = Integer.MIN_VALUE;
int lowest = Integer.MAX_VALUE;

If you initialise them both to zero, you will never have a “highest” value below zero, or a “lowest” value above zero