continue is a keyword to skip the rest of a for/while-loop and continue to perform the next.


for (/* something #1 */ )

{

  //This line is always executed

  if (/* something #2 */) continue;

  //This line is only executed if 'something #2' is false

}

Consider to never use continue [1].

Example: CountDeadEnds


#include <vector>

 

//From http://www.richelbilderbeek.nl/CppCountDeadEnds.htm

const int CountDeadEnds(const std::vector<std::vector<int> >& maze)

{

  const int size = static_cast<int>(maze.size());

  int nDeadEnds = 0;

  for (int y=1; y!=size-1; ++y)

  {

    for (int x=1; x!=size-1; ++x)

    {

      if (maze[y][x] != 0) continue; //Continue if here is a wall

      const int nWalls

      = (maze[y+1][x ] == 1 ? 1 : 0)

      + (maze[y-1][x ] == 1 ? 1 : 0)

      + (maze[y ][x+1] == 1 ? 1 : 0)

      + (maze[y ][x-1] == 1 ? 1 : 0);

      if (nWalls == 3) ++nDeadEnds; 

    }

  }

  return nDeadEnds;

}

References

Joint Strike Fighter Air Vehicle C++ Coding Standards for the System Development and Demonstration Program. Document Number 2RDU00001 Rev C. December 2005. AV Rule 190 (MISRA Rule 57): 'The continue statement shall not be used.'

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(C++) continue

Example: CountDeadEnds

References