Writing to file

[kukluksklanas]

Hey guys, quick question

fprintf(r,"%f\n",*k);

This line should print a number to file. if i *k is in float format every thing's OK, but i need to use double. Than this line prints 0. what should i do? how should i change it? or there could be a problem with my main code?

[Maz]

you could try %lf (long float)

EDIT:

especially if you take inputs with scanf, I believe printf should work with %f too.

[kukluksklanas]

Exactly what i was looking for. Thanks a lot man