Compilare: main.cpp: In function 'int main()': main.cpp:55:25: warning: 'sec2' may be used uninitialized in this function [-Wmaybe-uninitialized] time=time_in_seconds+ sec-sec2; ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:52:17: warning: 'min2' may be used uninitialized in this function [-Wmaybe-uninitialized] if(min!=min2 || hour!=hour2) ^~ main.cpp:52:30: warning: 'hour2' may be used uninitialized in this function [-Wmaybe-uninitialized] if(min!=min2 || hour!=hour2) ~~~~~~~~~~^~~~~~~~~~~~~~