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Message: [QUOTE="Juergen Heinzl, post: 1707577"] [-] Useless unary "+" operator -> +*q++ <- here. [-] main() isn't void. [-] Useless cast and calloc (sizeof (pointer to char), sizeof (pointer to char) * sizeof (pointer to char)) probably isn't what you want, either. [-] It's a, as far as the copying is concerned, shorter form of ... while (*p = *q) { p++; q++; } .... which is a shorter form of ... *p = *q; while (*p != '\0') { p++; q++; *p = *q; } .... [-] (*q)++ means "increment the value at q". [-] Sure, as syntactically what you wrote is fine. Cheers, Juergen [/QUOTE]