Compilare: main.cpp: In function 'int cont()': main.cpp:20:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int backtraking(int)': main.cpp:32:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:38:10: warning: statement has no effect [-Wunused-value] for(i-1;i<=n;i++) ~^~