Thread: Unusual weird result when casting double to unsigned.

Please help! I don't understand why tempCents = 10.00, but when it cast to unsigned, it become 9? WHY?
This only happen if the price = 4.10; If i change it to 3.10, the unsigned cents will be normal '10'.

Code:

int main(void)
{
	double price = 0.0;
	unsigned dollars;
	double tempDollars;
	unsigned cents;
	double tempCents;
	
	price = 4.10;
	dollars = (unsigned) price;
	tempDollars = (double) dollars;
	
	tempCents = (price - tempDollars) * 100;
	cents = (unsigned) tempCents;
	
	printf("\nPrice: %.2f\n", price);
	printf("\nDollars: %u\n", dollars);
	printf("\nTemporary Dollars: %.2f\n", tempDollars);
	printf("\nTemporary Cents: %.2f\n", tempCents);
	printf("\nCents: %u\n", cents);
	
	return EXIT_SUCCESS;
}

Result:

Price: 4.10


Dollars: 4


Temporary Dollars: 4.00


Temporary Cents: 10.00


Cents: 9