Compilare: main.cpp: In function 'int main()': main.cpp:10:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("cmmdc.in", "r", stdin); ^ 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 ("cmmdc.out", "w",stdout); ^ main.cpp:41:18: warning: 'rezultat' may be used uninitialized in this function [-Wmaybe-uninitialized] else cout << rezultat << endl; ^~~~~~~~