Compilare: user.cpp: In function ‘std::vector<int> arrxor(std::vector<int>, std::vector<int>)’: user.cpp:14:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0, j = 0; i < arr1.size() || j < arr2.size(); ) { ^ user.cpp:14:61: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0, j = 0; i < arr1.size() || j < arr2.size(); ) { ^ user.cpp:15:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( i == arr1.size() ) { ans.push_back( arr2[j ++] ); continue; } ^ user.cpp:16:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( j == arr2.size() ) { ans.push_back( arr1[i ++] ); continue; } ^