Age average

Question

Why I can’t get correct result , 28.4?

public class Program
{
public static void main(String[] args) {

int grace = 10;
int edward = 21;
int rose = 15;
int mom = 46;
int dad = 50;

float average = (grace+edward+rose+mom+dad)/5;

System.out.println(average);

}
}

Answer 1

You defined the numbers as integers, so when they are divided, they are divided as integers, rounding the decimal to whole number.

If you want to keep the decimal, try:

//my code is in C#, adapt it to Java

using System;

public class Program
{
public static void Main(String[] args) {

float grace = 10;
float edward = 21;
float rose = 15;
float mom = 46;
float dad = 50;

float average = (grace+edward+rose+mom+dad)/5;

Console.WriteLine(average);

}
}

Answer 2

What does this output?

Answer 3

Why is that not true? To show avg age of array
int ages[] = {19, 24, 36, 45, 56, 52, 21, 27, 24, 34, 29, 60, 40, 42, 45, 47, 22, 30, 34, 20, 18, 26, 51, 43, 47, 39, 22, 34, 56, 52, 21, 27, 24, 37, 19, 24, 36, 45, 44, 49, 23, 25, 19, 40, 29, 60, 40, 42, 45, 47, 61, 30, 19, 43, 47, 39, 41, 46, 29, 24, 21, 25, 28};

int size = 63;

int *p = ages;
int avg;
for(int i=0;i<size;i++)
{
cout << *p << endl;
avg += *p;
p++;

}
cout<<avg/size;

Answer 4

24.0