Source of looping.cpp

Structures and functions

  1: //looping.cpp
  2: //C++ code examples illustrating looping constructs

  4: //How to format a while-loop with a one-statement body:
  5: while (condition)
  6:     statement;

  8: //If "statement" is very short, the following is also permissible:
  9: while (condition) statement;

 11: //How to format a while-loop with a multi-statement body:
 12: while (condition)
 13: {
 14:     statement1;
 15:     statement2;
 16: }

 18: //How to format a do...while-loop with a one-statement body:
 19: do
 20:     statement;
 21: while (condition);

 23: //How to format a do...while-loop with a multi-statement body:

 25: do
 26: {
 27:     statement1;
 28:     statement2;
 29: }
 30: while (condition);

 32: //How to format a for-loop with a one-statement body:
 33: for (int i = start; i <= finish; i++)
 34:     statement;

 36: //The following reduced-horizontal-spacing format may also be
 37: //used, and though it is inconsistent with the usual recommendation
 38: //to have a blank space on either side of an operator, in the
 39: //for-loop situation it actually seems to enhance readability by
 40: //emphasizing the groupings containing the loop control variable:
 41: for (int i=start; i<=finish; i++)
 42:     statement;

 44: //If "statement" is very short, the following is also permissible:
 45: for (int i=start; i<=finish; i++) statement;

 47: //How to format a for-loop with a multi-statement body:
 48: for (int i=start; i<=finish; i++)
 49: {
 50:     statement1;
 51:     statement2;
 52: }