incorrect output

[Tom Kusnir]

when i run the following program and input .99 as the money amount, it tells me that i used 3 quarters, 2 dimes, and 3 pennies. it should use 4 pennies.

cout << "Enter an amount less than $1.00: ";
cin >> moneyamount;
quartercount = moneyamount / quarter;
moneyremain = moneyamount - (quartercount*quarter);
dimecount = moneyremain / dime;
moneyremain = moneyremain - (dimecount*dime);
nickelcount = moneyremain / nickel;
moneyremain = moneyremain - (nickelcount*nickel);
pennycount = moneyremain / penny;

cout << "You used " << quartercount << " quarters, " << dimecount << " dimes, "
<< nickelcount << " nickels, and " << pennycount << " pennies." << endl;

return 0;

if i modify the code so that it doesn't display the value stored in penny count and instead display the value of (moneyremain/penny) it calculates correctly and shows 4. any idea why this is happening?

[Stewbond]

If you are using float as your type, then you are getting rounding errors. Try using doubles instead.

Another useful function that you could use is the fmod() function in <cmath>.

If that doesn't work, then I suggest multiplying by 100 and casing to an int. Then use integer division and the modulous operator.