num.cpp:7:  Should have a space between // and comment  [whitespace/comments] [4]
num.cpp:9:  Do not use namespace using-directives.  Use using-declarations instead.  [build/namespaces] [5]
num.cpp:53:  Could not find a newline character at the end of the file.  [whitespace/ending_newline] [5]
Done processing num.cpp
Total errors found: 3