Compilare: main.cpp: In function 'int main()': main.cpp:13:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("studenti.in", "r", stdin); ^ main.cpp:14:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("studenti.out", "w", stdout); ^ main.cpp:17:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &n); ^ main.cpp:19:41: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &v[i].g, &v[i].h); ^ main.cpp:16:38: warning: 'poz2' may be used uninitialized in this function [-Wmaybe-uninitialized] int n, maxg = 0, maxh = 0, poz1, poz2; ^~~~ main.cpp:16:32: warning: 'poz1' may be used uninitialized in this function [-Wmaybe-uninitialized] int n, maxg = 0, maxh = 0, poz1, poz2; ^~~~