Compilare: main.cpp: In function 'int reverse(int&)': main.cpp:81:12: warning: 'invers' may be used uninitialized in this function [-Wmaybe-uninitialized] return numar; ^~~~~ main.cpp: In function 'int main()': main.cpp:77:24: warning: 'invers' may be used uninitialized in this function [-Wmaybe-uninitialized] invers = invers*10 + rest; ~~~~~~^~~ main.cpp:73:9: note: 'invers' was declared here int invers, rest; ^~~~~~