Re: Loops (was Re: do { quit; } else { })

bart <bc@freeuk.com> writes:

On 15/04/2025 20:07, Scott Lurndal wrote: 

bart <bc@freeuk.com> writes: 

On 15/04/2025 14:19, Kaz Kylheku wrote: 

 

Thats's fine. But it means a real 'for' loop doesn't exist in C;
you have to emulate it using that 3-way construct, which is naff,
and also error prone. 

 
Real for loops _are_ a three-way construct.
 
135 FOR I=1 TO 10 STEP 2                              [BASIC]
 
     for(i = 1; i < 11; i += 2)                        [C/C++]
 
     do 1 = 1, 10, 2                                   [FORTRAN] 

>
Any step other than 1 is unusual. So Basic and Fortran would
typically be:
>
    for i = 1 to 10     # 6 tokens; Basic
    do  i = 1, 10       # 6 tokens; Fortran
    for i = 1, 10       # 6 tokens; Lua
    for i to 10 do      # 5 tokens; Mine (using default start)
    to 10 do            # 3 tokens; Mine (when index is not needed)
>
Let's look at that C again:
>
    for (int i = 1; i < 11; i += 1)  # 15 tokens; C
 

 
 
  for(i = 1; i++ <= 10;)