Compilare: user.cpp: In function ‘void init()’: user.cpp:11:9: warning: unused variable ‘i’ [-Wunused-variable] int i,j; ^ user.cpp:11:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^ user.cpp: In function ‘void afisare(int)’: user.cpp:67:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(i!=x) ^ user.cpp: In function ‘void generare(int)’: user.cpp:47:15: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] s[y]=1; ^