How do I separate digits from a double and store them as an int in C?

问题

Say I have a double as follows:

double aDouble = 15.6;    

and I want to convert it to three int's as follows:

int x = 1;
int y = 5;
int z = 6;

How would I go about doing this?

回答1:

double aDouble = 15.6;
int tmp = aDouble*10;
int x, y, z;
x = tmp/100;
tmp -= x * 100;
y = tmp/10;
tmp -= y * 10;
z = tmp;

回答2:

Since this looks like homework, I will give you 2 clues.

1. 15.6 = 1 * 10 + 5 * 1 + 6 * 0.1
2. casting from a double to an int trucates the double.

You should be able to work out the rest.

来源：https://stackoverflow.com/questions/27304821/how-do-i-separate-digits-from-a-double-and-store-them-as-an-int-in-c