Compilare: user.cpp: In function 'std::vector<int, std::allocator<int> > add(std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)': user.cpp:25: warning: comparison between signed and unsigned integer expressions user.cpp:25: warning: comparison between signed and unsigned integer expressions user.cpp:27: warning: comparison between signed and unsigned integer expressions user.cpp:28: warning: comparison between signed and unsigned integer expressions user.cpp:22: warning: unused variable 'j' user.cpp:22: warning: unused variable 'k' user.cpp: In function 'std::vector<int, std::allocator<int> > mult(std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)': user.cpp:71: warning: comparison between signed and unsigned integer expressions user.cpp:73: warning: comparison between signed and unsigned integer expressions user.cpp:76: warning: comparison between signed and unsigned integer expressions user.cpp:78: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:147: warning: format '%ld' expects type 'long int', but argument 2 has type 'int' user.cpp:156: warning: comparison between signed and unsigned integer expressions user.cpp:187: warning: format '%ld' expects type 'long int', but argument 2 has type 'int' user.cpp:194: warning: format '%ld' expects type 'long int', but argument 2 has type 'int'