Compilare: user.cpp: In function ‘int main()’: user.cpp:22:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( (x*x+x) >= t && x*x!=t) ^ user.cpp:22:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( (x*x+x) >= t && x*x!=t) ^ user.cpp:24:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( (x*x+x) < t) ^ user.cpp:8:31: warning: unused variable ‘y’ [-Wunused-variable] { unsigned long long n,t,p,i,y; ^ user.cpp:9:11: warning: unused variable ‘x’ [-Wunused-variable] double x; ^