Something
public text v1 · immutablekarlsson@karlsson-laptop:~/poly$ make
gcc -g -pedantic -std=c99 -Wall -Werror -c -o poly.o poly.c
poly.c:14: error: redefinition of typedef poly_t
poly.h:4: error: previous declaration of poly_t was here
cc1: warnings being treated as errors
poly.c:70: warning: return type of main is not int
make: *** [poly.o] Error 1
[2]- Done gedit poly.h