Compilare: main.cpp: In function 'int main()': main.cpp:11:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("teatru.in" ,"r", stdin); ^ main.cpp:12:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("teatru.out", "w", stdout); ^ main.cpp:16:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d %s", &n, &c, s); ^ main.cpp:52:24: warning: 'dr' may be used uninitialized in this function [-Wmaybe-uninitialized] for (i = st; i <= dr; i++) ~~^~~~~ main.cpp:14:34: warning: 'st' may be used uninitialized in this function [-Wmaybe-uninitialized] int n, c, i, j, cate, maxim, st, dr; ^~