Division in c not giving expected value

Question

When doing a division im getting a rounded answer?

double div;
div = 25/8;
printf("%lf",div);

When i do this prints out 3.0000

why dont i get 3.125?

Answer 1

Because you are doing an integer division, try with:

div = 25.0/8;

or

div = (double)25/8;

Typing 25.0 means a double literal. You could also use 25.f for a float literal. Both of these trigger floating point division.

Answer 2

Typecast it, i.e. change it to:

double div;
div = (double)25/(double)8;
printf("%lf",div);