Which is better?
ix269 at sdcc6.UUCP
ix269 at sdcc6.UUCP
Wed Dec 19 20:23:09 AEST 1984
fig()
Might it be noted that if-else pairs are accepted as one statement?
Break is a jump (not machine phrase) out of the switch, so the big
question ends up being will your optimizer discover that one of the
conditionals is jumping twice (if-else as aversed to if-break-break)?
The source code for the if-else is better looking, and perhaps even
the cost of an extra jump might not be worth the ugliness (unless this
is a kernal ugly). This leaves things in a different light than merely
style, but welcome to a higher level language :-).
switch (A) {
case 0:
if (B) {
/* this */
break;
}
/* else */
break;
case 1:
if (B) {
/* this */
} else {
/* that */
}
break;
}
More information about the Comp.lang.c
mailing list