Info Catalog octave: The for Statement octave: Statements octave: The continue Statement

octave: The break Statement

 
 10.6 The break Statement
 ========================
 
 The ‘break’ statement jumps out of the innermost ‘while’, ‘do-until’, or
 ‘for’ loop that encloses it.  The ‘break’ statement may only be used
 within the body of a loop.  The following example finds the smallest
 divisor of a given integer, and also identifies prime numbers:
 
      num = 103;
      div = 2;
      while (div*div <= num)
        if (rem (num, div) == 0)
          break;
        endif
        div++;
      endwhile
      if (rem (num, div) == 0)
        printf ("Smallest divisor of %d is %d\n", num, div)
      else
        printf ("%d is prime\n", num);
      endif
 
    When the remainder is zero in the first ‘while’ statement, Octave
 immediately “breaks out” of the loop.  This means that Octave proceeds
 immediately to the statement following the loop and continues
 processing.  (This is very different from the ‘exit’ statement which
 stops the entire Octave program.)
 
    Here is another program equivalent to the previous one.  It
 illustrates how the CONDITION of a ‘while’ statement could just as well
 be replaced with a ‘break’ inside an ‘if’:
 
      num = 103;
      div = 2;
      while (1)
        if (rem (num, div) == 0)
          printf ("Smallest divisor of %d is %d\n", num, div);
          break;
        endif
        div++;
        if (div*div > num)
          printf ("%d is prime\n", num);
          break;
        endif
      endwhile
 

Info Catalog octave: The for Statement octave: Statements octave: The continue Statement