Compilare: user.cpp: In function ‘int main()’: user.cpp:55:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ret(j) <= p+2){ ^ user.cpp:64:56: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j < V[i+dif] && ret(j) <= p+2){ ^ user.cpp:71:57: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j == V[i+dif] && ret(j) <= p+2){ ^ user.cpp: In function ‘int ret(int)’: user.cpp:28:1: warning: control reaches end of non-void function [-Wreturn-type] } ^