What's wrong with this division? [closed]

Answer 1

3/8 = 0

3.0/8.0 = 0.375

Answer 2

The unicorns took away the 3 and replaced it with a 0.

On the off chance that this is a real question... 3/8 is rounded down to 0. 0* 100 = 0.

Answer 3

3 and 8 in your division are integer literals, so integer division is performed, and 3 / 8 evaluates to zero. If you replace them with 3.0 and 8.0, or use an appropriate data type suffix (you don't say what language you are in) then the calculation will work.

Answer 4

Your expression involves only integers, and 3/8 is 0.

If you want a floating-point expression, at least one element of the expression must be floating point.

The simplest solution is the following:

double result = (100.0 * 3/8)

Note that I put the hundred factor first because it helps having a better precision to do the multiplications before the divisions.

Also, the toString() is strange??

Answer 5

Because integer math was used, not floating point.

You wrote ((3/8)*100) but none of the constants in that expression have a non-integral type. Therefore the compiler (correctly) interpreted that as integer arithmetic. Since 3/8 is less than 1, the expression evaluates to 0.

A simple fix would be to write ((3./8.)*100.) instead. Actually, making either of the 3 or 8 be a floating point value would be sufficient due to the rules for mixed type expressions.