4.1 Blocks

• All braces MUST be on their own line.

  This is wrong: if (x == 3) { x += 4; }

  This is correct: if (x == 3) { x += 4; }

• As an exception, you are allowed to add a comment after a closing brace in order to specify what is getting closed.

            namespace foo
            {
              // FIXME: Add 500 lines here.
            } // namespace foo
       

  But SHOULD NOT state the obvious.

• As another exception, you are allowed to put the opening brace after a try or a do on the same line. This code is correct:

            int foo ()
            {
              int c = 0;
              int r = 0;
            
              do {
                try {
                  r = bar (++c);
                }
                catch (...)
                {
                  r = 0;
                }
              } while (c < 42 && !r);
              return r;
            }
       

• Closing braces MUST appear on the same column as the corresponding opening brace.
• The text between two braces MUST be indented by a fixed, homogeneous amount of whitespace. This amount SHOULD be 2 or 4 spaces.
• Opening braces SHOULD appear on the same column as the text before. However, they MAY be shifted with an indentation level after control structures, in which case the closing brace MUST be shifted with the same offset.