(C++) continue

 

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

 

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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

 

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#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

 

1. 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.'