Loops + Flow control

C2 has the same loop constructs as C, namely: for, while and do..while.

For

For statements are very similar to C:

for (u32 i=0; i<10; i++) printf("%d\n", i);

While statements are very similar to C as well:

while (i<10) i++;

while (Point* p = get_point()) { .. }

Note that C2 does allow a declaration to be used as condition (see example above)

Do-while statements have been removed from C2, since they were very error prone and often only used for macro expansions.

If statements are exactly the same as C.

if (x < 10 && y >= 10 && ptr != nil) { .. }

It can be used with and without braces just like in C.

Labels and goto exist just like in C.

start:
    i++;
    if (i < 10) goto start;

Labels must start with a lower-case character.

To jump out of or continue an outer loop labelled break/continue exists:

outer: for (i32 i=0; i<100; i++) {
  inner: for (i32 j=0; j<100; j++) {
      if (..) break outer;
      if (..) continue outer;
  }
}

Note that these labels can also be used for regular goto statements.

For the switch statement see the dedicated page Switch Statements