Compilare: main.cpp: In function 'int main()': main.cpp:25:17: warning: variable 'dmic' set but not used [-Wunused-but-set-variable] int n , d , dmic , dmare , i , j , nr , sum; ^~~~ main.cpp:26:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&n); ^ main.cpp:66:26: warning: 'nr' may be used uninitialized in this function [-Wmaybe-uninitialized] if (!found[nr] || rcs[nr] < log((double)nr)){ ~~~~~~~~^ main.cpp:82:17: warning: 'dmare' may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf (fout,"%d " , sol[i] * dmare); ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~