/in/foo.cc: In function 'void printEven(const std::vector<int>&, int)':
/in/foo.cc:7:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 |     if (idx < v.size()) {
      |         ~~~~^~~~~~~~~~
/in/foo.cc: In function 'void printVector(const std::vector<int>&, int)':
/in/foo.cc:16:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |     if (idx < v.size()) {
      |         ~~~~^~~~~~~~~~