Compilare: user.cpp: In function ‘void vecini(int&)’: user.cpp:43:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.cpp: In function ‘void init()’: user.cpp:83:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j;; ^ user.cpp:85:35: warning: iteration 74u invokes undefined behavior [-Waggressive-loop-optimizations] vecin[i]=valid[i]=folosit[i]=0; ^ user.cpp:84:5: note: containing loop for(i=1;i<=100;++i) ^ user.cpp: In function ‘int main()’: user.cpp:85:35: warning: iteration 74u invokes undefined behavior [-Waggressive-loop-optimizations] vecin[i]=valid[i]=folosit[i]=0; ^ user.cpp:84:5: note: containing loop for(i=1;i<=100;++i) ^