Compilare: user.cpp: In function ‘int main()’: user.cpp:273:27: warning: variable ‘s’ set but not used [-Wunused-but-set-variable] int x, y, s; ^ user.cpp:266:17: warning: variable ‘x’ set but not used [-Wunused-but-set-variable] int x, n, m; ^ user.cpp:283:23: warning: variable ‘s’ set but not used [-Wunused-but-set-variable] int x, y, s; ^ user.cpp:292:17: warning: variable ‘x’ set but not used [-Wunused-but-set-variable] int x, y, s; ^ user.cpp:292:20: warning: variable ‘y’ set but not used [-Wunused-but-set-variable] int x, y, s; ^ user.cpp:292:23: warning: variable ‘s’ set but not used [-Wunused-but-set-variable] int x, y, s; ^ user.cpp:299:17: warning: variable ‘x’ set but not used [-Wunused-but-set-variable] int x, y; ^ user.cpp:299:20: warning: variable ‘y’ set but not used [-Wunused-but-set-variable] int x, y; ^ user.cpp:325:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 1; j<comp[i].size(); ++j) ^ user.cpp:365:17: warning: variable ‘alfa’ set but not used [-Wunused-but-set-variable] int alfa, n, m; ^ user.cpp:365:23: warning: variable ‘n’ set but not used [-Wunused-but-set-variable] int alfa, n, m; ^ user.cpp:252:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ostrov.in", "r", stdin); ^ user.cpp:253:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ostrov.out", "w", stdout); ^ user.cpp:349:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ostrov.in", "r", stdin); ^