Pointer expr *--*++p+3 ???

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Originally Posted by Bladactania

ok, but if s[0] = 5, I want the result of my expression to equal 8, how would I code it?

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you dereference pointer first

I see. Thanks for clearing up that confusion :)

Quote:

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Originally Posted by Bladactania

ok, but if s[0] = 5, I want the result of my expression to equal 8, how would I code it?

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that depends on the type of s[0]? is it a pointer or an integer though from your post it looks like s[0] is an int but still want to clarify.

in that post I was using s an as array of ints

Quote:

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Originally Posted by Bladactania

in that post I was using s an as array of ints

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then just do s[0] = 8 to assign 8 to s[0] but that won't work if s[0] is a pointer to int as you need to first dereference and then assign as in *s[0] = 8

I know that. I want to perform a mathematical expression (add 3) to whatever int is pointed to by s[0].

Quote:

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Originally Posted by Bladactania

I know that. I want to perform a mathematical expression (add 3) to whatever int is pointed to by s[0].

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Code:

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*s[0] += 3; /* increments whatever s[0] points to by 3 */

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if you say that s is array of ints
then s[0] is int - it is not a pointer