Compilare: main.cpp: In function 'int main()': main.cpp:27:56: warning: 's1' may be used uninitialized in this function [-Wmaybe-uninitialized] secunde2=(h*3600+m*60+s)-(h1*3600+m1*60+s1); ~~~~~~~~~~~~~~^~~~ main.cpp:27:53: warning: 'm1' may be used uninitialized in this function [-Wmaybe-uninitialized] secunde2=(h*3600+m*60+s)-(h1*3600+m1*60+s1); ~~^~~ main.cpp:27:45: warning: 'h1' may be used uninitialized in this function [-Wmaybe-uninitialized] secunde2=(h*3600+m*60+s)-(h1*3600+m1*60+s1); ~~^~~~~