Compilare: user.cpp: In function ‘int main()’: user.cpp:20:9: warning: variable ‘s’ set but not used [-Wunused-but-set-variable] int s, j1, j2; ^ user.cpp:20:12: warning: variable ‘j1’ set but not used [-Wunused-but-set-variable] int s, j1, j2; ^ user.cpp:20:16: warning: unused variable ‘j2’ [-Wunused-variable] int s, j1, j2; ^ user.cpp:21:15: warning: unused variable ‘sf’ [-Wunused-variable] long long sf=1, jf=1; ^ user.cpp:21:21: warning: unused variable ‘jf’ [-Wunused-variable] long long sf=1, jf=1; ^ user.cpp:22:15: warning: unused variable ‘nr’ [-Wunused-variable] long long nr; ^