Compilare: main.cpp: In function 'int main()': main.cpp:60:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<div.size();i++){ ~^~~~~~~~~~~ main.cpp:32:18: warning: variable 'lim' set but not used [-Wunused-but-set-variable] int a, n, i, lim, expo, phi, cop, prim, doi, cop2, x, cn; ^~~ main.cpp:32:39: warning: variable 'prim' set but not used [-Wunused-but-set-variable] int a, n, i, lim, expo, phi, cop, prim, doi, cop2, x, cn; ^~~~ main.cpp:32:45: warning: variable 'doi' set but not used [-Wunused-but-set-variable] int a, n, i, lim, expo, phi, cop, prim, doi, cop2, x, cn; ^~~ main.cpp:40:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d", &a, &n); ^