Compilare: user.cpp: In function ‘int eprim(long long unsigned int)’: user.cpp:73:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=3432 && numprime[i]<nr; i++)if(nr%numprime[i]==0) return 0; ^ user.cpp: In function ‘int ubercool(long long unsigned int)’: user.cpp:116:31: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(aux3*aux3==aux)if(frecv[aux3]==1)return 1; else return 0; ^ user.cpp:125:1: warning: control reaches end of non-void function [-Wreturn-type] } ^