set.h:9:  public: should be indented +1 space inside class Set  [whitespace/indent] [3]
set.h:10:  Line ends in whitespace.  Consider deleting these extra spaces.  [whitespace/end_of_line] [4]
set.h:10:  Do not leave a blank line after "public:"  [whitespace/blank_line] [3]
set.h:13:  Single-parameter constructors should be marked explicit.  [runtime/explicit] [5]
set.h:31:  private: should be indented +1 space inside class Set  [whitespace/indent] [3]
set.h:32:  Line ends in whitespace.  Consider deleting these extra spaces.  [whitespace/end_of_line] [4]
set.h:32:  Do not leave a blank line after "private:"  [whitespace/blank_line] [3]
set.h:37:  Missing space around colon in range-based for loop  [whitespace/forcolon] [2]
set.h:44:  Missing space around colon in range-based for loop  [whitespace/forcolon] [2]
set.h:47:  Missing space around colon in range-based for loop  [whitespace/forcolon] [2]
set.h:55:  Missing space around colon in range-based for loop  [whitespace/forcolon] [2]
set.h:56:  Missing space around colon in range-based for loop  [whitespace/forcolon] [2]
set.h:68:  Missing space around colon in range-based for loop  [whitespace/forcolon] [2]
set.h:70:  Missing space around colon in range-based for loop  [whitespace/forcolon] [2]
set.h:88:  Missing space around colon in range-based for loop  [whitespace/forcolon] [2]
set.h:106:  Missing space around colon in range-based for loop  [whitespace/forcolon] [2]
Done processing set.h
Total errors found: 16