Compilare: user.cpp: In function ‘int main()’: user.cpp:16:15: warning: unused variable ‘k’ [-Wunused-variable] int i, j, k, t, lg, frum, sol; ^ user.cpp:16:18: warning: unused variable ‘t’ [-Wunused-variable] int i, j, k, t, lg, frum, sol; ^ user.cpp:16:21: warning: unused variable ‘lg’ [-Wunused-variable] int i, j, k, t, lg, frum, sol; ^ user.cpp:16:25: warning: unused variable ‘frum’ [-Wunused-variable] int i, j, k, t, lg, frum, sol; ^ user.cpp:16:31: warning: unused variable ‘sol’ [-Wunused-variable] int i, j, k, t, lg, frum, sol; ^ user.cpp:13:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("frumusete.in", "r", stdin); ^ user.cpp:14:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("frumusete.out", "w", stdout); ^