Compilare: main.cpp: In function 'int main()': main.cpp:12:15: warning: variable 'fout' set but not used [-Wunused-but-set-variable] FILE *fin, *fout ; ^~~~ main.cpp:15:7: warning: unused variable 'zero' [-Wunused-variable] int zero, semn, ccoef, r, p; ^~~~ main.cpp:17:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d\n", &p ) ; ^ main.cpp:27:20: warning: 'semn' may be used uninitialized in this function [-Wmaybe-uninitialized] coef[0] += r * semn ; ~~^~~~~~