How can i convert Integer value to decimal value?

Question

i have an Integer value:

Integer value = 56472201;

Where the value could be positive or negative.

When I divide the value by 1000000, I want this result in the form 56.472201 but instead it gives me just the quotient. How am I able to get both the quotient and remainder values?

What is the result used for ? Do you want to just display it, or do you want to make other computations (and with what precision) ? — barjak, Sep 14 '10 at 11:08

lalli · Accepted Answer · 2010-09-14T09:54:51.353

6

cast it to float and then do it:

int i = 56472201;

float j = ((float) i)/1000000.0

Edit: Due to precision(needed in your case), use double. Also as pointed by Konrad Rudolph, no need for explicit casting:

double j = i / 1000000.0;

edited Sep 14 '10 at 09:54

answered Sep 14 '10 at 09:48

lalli

6,083
7
42
55

2

Strictly speaking, that cast is redundant when you divide by a `float` anyway (or in your case `double` for almost all languages). – Konrad Rudolph Sep 14 '10 at 09:48
Good point, I'm just an insecure/paranoid programmer (scared of strtok!) – lalli Sep 14 '10 at 09:56
thank u guyes It works with both @Konrad Rudolph @lalli and @Guffa Thanks for the solutions – jimmy Sep 14 '10 at 11:39

score 1 · Answer 2 · answered Sep 14 '10 at 09:48

You have to convert the value to a floating point type first, otherwise you will be doing an integer division.

Example in C#:

int value = 56472201;
double decimalValue = (double)value / 1000000.0;

(The cast is actually not needed in this code, as dividing by a floating point number will cast the value to match, but it's clearer to write out the cast in the code as that is what actually happens.)

score 1 · Answer 3 · answered Sep 14 '10 at 10:23

If you divide an int by a double you will be left with a double result as illustrated by this unit test.

@Test
public void testIntToDouble() throws Exception {
    final int x = 56472201;
    Assert.assertEquals(56.472201, x / 1e6d);
}

1e6d is 1 * 10^6 represented as a double

How can i convert Integer value to decimal value?

3 Answers3

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