why is if(1/10) and if(0.1) have different values? [duplicate]

Question

Just do not understand why the following two have different values. The first one has value 0, while the other has value 1

if(1/10);
if(0.1);

Answer 1

By default the type of 1 is int, thus 1/10 will be rounded down to 0 which is equivalent to false. While 0.1 has some bits set and is not 0.

On the other hand 1.0/10 is equivalent to 0.1.