Formatted output – printf

This is the piece of code I saw today:

printf ("%.*s\n",l,s);

This is the same as

printf ("%.2s\n",s); //l=2 in my example.

I suppose everyone knows this, and I’m the only idiot! Rather nice, when you don’t know before hand what width you want to print. I clearly need to go back to K&R.

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