This is just a simple Java code but gets a wrong result:
import java.util.Scanner;
public class BMI_Calculator {
public static void main(String[] args) {
Scanner s = new Scanner(System.in);
System.out.print("Enter your weight(kg):");
double w = s.nextDouble();
System.out.printf("\n%s", "Enter you height(cm):");
double h = s.nextDouble();
h = h / 100;
double BMI = w / (h * h);
String b;
if (BMI < 18.5) {
System.out.println("less than 18.5");
b = "Underweight";
} else if ((BMI) >= 18.5 || (BMI) <= 24.9) {
System.out.println("between 18.5 and 24.9");
b = "Normal";
} else if (BMI >= 25 || BMI <= 29.9) {
System.out.println("between 25 and 29.9");
b = "Overweight";
} else {
System.out.println("greater than 30");
b = "Obese";
}
System.out.println("Your BMI is:" + BMI + "(" + b + ")");
}
}
This is the output
Enter your weight(kg):58
Enter you height(cm):150
between 18.5 and 24.9
Your BMI is:25.77777777777778(Normal)
I thought it might be related to precision of double variable, I tried the same code declaring the variables as float instead of double and got the same result , I really don't understand how could such a thing happen (25.7 < 24.9)?! how?!
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