pow() gives unexpected result when using typecasting

Question

when I write code as

int  m=4;
print(pow(10,m/2))

it gives me result 100.

But when I do

int  m=4;
print((int)pow(10,m/2))

It gives result 99.

Can anyone suggest why this is happening?

Answer 1

EDIT:

It's a bug of dev C++ compiler.

ADVICE: don't use dev C++ any more, it's really too old.