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359

Bell Labs 'Unix' Tape from 1974 Successfully Dumped to a Tarball (tech.slashdot.org)

submitted 14 hours ago by sundray@lemmus.org to c/technology@lemmy.world

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[–] xthexder@l.sw0.com 26 points 11 hours ago (6 children)

Hello World in 1974: echo.c

main(argc, argv)
int argc;
char *argv[];
{
	int i;

	argc--;
	for(i=1; i<=argc; i++)
		printf("%s%c", argv[i], i==argc? '\n': ' ');
}

[–] ZoteTheMighty@lemmy.zip 10 points 10 hours ago (5 children)

Bloat, they wasted an extra integer operation with argc--.

[–] xthexder@l.sw0.com 9 points 10 hours ago (4 children)

I think it's actually quite elegant. No matter what it has to skip over argument 0 which will be the executable name echo.
If the subtraction was removed and the loop changed to <, it would then need to do an addition or subtraction inside the loop to check if it's the last argument.

[–] surewhynotlem@lemmy.world 4 points 10 hours ago

Or they just drop the =

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