Determine if file write out is true c -

is there way find out if file write occurred in c. i'm supposed return 0 if wrote file , -1 if nothing written.

if you're using fwrite(), example, return code number of items written.

similarly, fprintf() returns number of characters written.

so can examine return code figure out if written, like:

if (fprintf (fh, "val=%d\n", value) == 0)     return -1; return 0; 

or:

if (fwrite (buffer, sizeof(something), 7, fh) == 0)     return -1; return 0; 

keep in mind you're asking nothing/something indication , means partial or complete success. if want know how much of requested written, hat's tiny bit more complex.