Compilare: main.cpp: In function 'int main()': main.cpp:6:15: warning: unused variable 'j' [-Wunused-variable] int n,k,i,j,max_element=0,min_element=250000,start,finish; ^ main.cpp:23:18: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<start<<' '<<finish<<' '<<max_element-min_element; ^~~ main.cpp:23:31: warning: 'finish' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<start<<' '<<finish<<' '<<max_element-min_element; ^~~