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If you want to use the old value, use postincrement, if the new value, preincrement, if none, then it is all the same. Eg.:

old = x++;

new = ++x;

++x;

x++; /* the last two do the same thing, the compiler will generate the same Assembly instructions */

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Q: Which is more efficient to use in 'c' preincrement or postincrement?
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