Blocks

• All braces MUST be on their own lines.

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

  This is correct:

            
  
            if (x == 3)
            {
              x += 4;
            }
            
            

  
  
• 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 a fixed offset after control structures, in which case the closing brace MUST be shifted with the same offset.

  These are wrong: if (x == 3) { foo3(); { inner(); } } if (x == 3) { foo3(); { inner(); } } if (x == 3) { foo3(); { inner(); } }

  These are correct:

            
  
            if (x == 3)
            {
              foo3();
              {
                inner();
              }
            }
            
            if (x == 3)
              {
                foo3();
                {
                  inner();
                }
              }
            
            

  
  
• In C functions, the declaration part MUST be separated from statements with one blank line. Note that when there are no declarations, there MUST NOT be any blank line within a block.

  An example is provided in the following section.