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increment operator weirdness in these situations

ali.cooom
in Computer Science

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can someone explain to me the outputs please?

i don't understand how the increment and decrement operator work in these situations.

thanks

post-98344-0-05276300-1373409017_thumb.png

post-98344-0-39295700-1373409020_thumb.png

post-98344-0-22134300-1373409024_thumb.png

post-98344-0-80367700-1373409028_thumb.png

i=1;

x=++i; /* x=2 because increment before the value of i is assigned to x */

x=i++; /* x=2 because increment after the value of i is assigned to x */

 

++i increment before value of i used in expression preincrement

i++ increment after value of i used in expression postincrement

Look at the difference in the output in the last example. Why is that different from the others?

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