Compilare: main.cpp: In function 'int add(int, int)': main.cpp:14:10: warning: statement has no effect [-Wunused-value] for(a; a <= n; a += a & -a) ^ main.cpp:16:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int suma(int)': main.cpp:20:11: warning: statement has no effect [-Wunused-value] for(dr; dr > 0; dr -= dr & -dr) ^