Compilare: user.cpp: In function ‘int main()’: user.cpp:8:11: warning: unused variable ‘s’ [-Wunused-variable] int a,b,c,s; ^ user.cpp:13:8: warning: ‘c’ may be used uninitialized in this function [-Wmaybe-uninitialized] a=a%c; ^ user.cpp:10:1: warning: ‘b’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (int i=1; i<b; ++i) ^ user.cpp:15:7: warning: ‘a’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<a; ^