Compilare: user.cpp: In function ‘int test(int, int)’: user.cpp:9:9: warning: unused variable ‘x2’ [-Wunused-variable] int x2=x; ^ user.cpp: In function ‘int ciur()’: user.cpp:31:11: warning: unused variable ‘c’ [-Wunused-variable] int p,c; ^ user.cpp: In function ‘int main()’: user.cpp:63:5: warning: unused variable ‘i’ [-Wunused-variable] int i; ^