Compilare: user.cpp: In function ‘void afisMultime(std::vector<int>)’: user.cpp:14:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < a.size(); ++ i ) printf("%d ",a[i]); ^ user.cpp: In function ‘int main()’: user.cpp:37:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( i = 0; i + 1 < v.size(); ++i ) printf("%d,", v[ i ] ); ^ user.cpp:30:9: warning: unused variable ‘n’ [-Wunused-variable] int n, m, i, j; ^ user.cpp:30:12: warning: unused variable ‘m’ [-Wunused-variable] int n, m, i, j; ^ user.cpp:30:18: warning: unused variable ‘j’ [-Wunused-variable] int n, m, i, j; ^ user.cpp: In function ‘std::vector<int> f2()’: user.cpp:77:9: warning: unused variable ‘n’ [-Wunused-variable] int n, k; ^ user.cpp: In function ‘int main()’: user.cpp:27:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("expr.in","r",stdin); ^ user.cpp:28:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("expr.out","w",stdout); ^ user.cpp:33:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",s); ^