Compilare: user.cpp: In function ‘void normalizare()’: user.cpp:18:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 1; i < a.size(); i++ ){ ^ user.cpp:30:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 1; i < b.size(); i++ ){ ^ user.cpp: In function ‘int main()’: user.cpp:66:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < a.size(); i++ ) ^ user.cpp:68:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < b.size(); i++ ) ^