Compilare: main.cpp: In function 'int cer1(int, int, int)': main.cpp:23:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'void cer2(int, int, int)': main.cpp:39:13: warning: 'r' may be used uninitialized in this function [-Wmaybe-uninitialized] out<<r<<'\n'; ^~~~ main.cpp: In function 'void cer3(int, int, int)': main.cpp:55:13: warning: 'r' may be used uninitialized in this function [-Wmaybe-uninitialized] out<<r<<'\n'; ^~~~