Compilare: main.cpp: In function 'int main()': main.cpp:52:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("permbit.in", "r", stdin); ^ main.cpp:53:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("permbit.out", "w", stdout); ^ main.cpp:56:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d ", &cerinta, &n, &m); ^ main.cpp:60:30: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(s1 + 1, m + 5, stdin); ^ main.cpp:62:32: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(s2 + 1, m + 5, stdin); ^