Compilare: main.cpp: In function 'void fil(int, int, int, int, bool)': main.cpp:9:7: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(i>=1&&i<=n&&j>=1&&j<=m) ^ main.cpp: In function 'int main(int, const char**)': main.cpp:28:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("insule.in", "r", stdin); ^ main.cpp:29:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("insule.out", "w", stdout); ^