Compilare: user.cpp: In function ‘int main()’: user.cpp:39:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("input.txt", "r", stdin); ^ user.cpp:72:15: warning: ‘mj’ may be used uninitialized in this function [-Wmaybe-uninitialized] print(mi, mj); ^ user.cpp:72:15: warning: ‘mi’ may be used uninitialized in this function [-Wmaybe-uninitialized]