Compilare: main.cpp: In function 'int main()': main.cpp:11:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("secv2.in","r", stdin); ^ main.cpp:12:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("secv2.out","w", stdout); ^ main.cpp:37:15: warning: 'p3' may be used uninitialized in this function [-Wmaybe-uninitialized] cout << p3 << " " << p2 << " " << mx; ^~~ main.cpp:37:28: warning: 'p2' may be used uninitialized in this function [-Wmaybe-uninitialized] cout << p3 << " " << p2 << " " << mx; ^~~ main.cpp:32:8: warning: 'p1' may be used uninitialized in this function [-Wmaybe-uninitialized] p3 = p1 + 1; ~~~^~~~~~~~