Thread: error

the instructions for this program is to use newton method to find zeros of a cubic function. cubics.h is given and it includes function prototypes and we have to write four functions on cubics.c. findroot.c has the main function and includes cubics.c and cubics.h. when compiling it, i get the error:



they say:
cubics.o (.text+0x68): In function 'cubic': multiple definition of
'cubic'
findroot.o(.text+068): first defined here

and then it does the same for the rest of the four functions in cubics.c,
but
at the end it says

collect2:ld returned 1 exit status

any ideas on whats wrong?

Post code so we can see where multiple definition occur. You must know that in C multiple declaration is allowed but multiple definition isn't

well our professor gave us the makefile but i think i have multiple definitions of cubics.c, ill check it out now

findroot includes cubics.c and findroot.c, cubics.c inclues cubics.h but cubics.h has the #ifdef

sorry, i meant findroot.c includes cubics.h and cubics.c and cubics.c includes cubics.h

yea that was it! thanks