3. Expressions

3.1 Why doesn't the code "a[i] = i++;" work?

3.2 Under my compiler, the code "int i = 7; printf("%d\n", i++ * i++);" prints 49. Regardless of the order of evaluation, shouldn't it print 56?

3.3 How could the code "int i = 3; i = i++;" ever give 7?

3.4 Don't precedence and parentheses dictate order of evaluation?

3.5 But what about the && and || operators?

3.8 What's a ``sequence point''?

3.9 So given "a[i] = i++;" we don't know which cell of a[] gets written to, but i does get incremented by one.

3.12 If I'm not using the value of the expression, should I use i++ or ++i to increment a variable?

3.14 Why doesn't the code "int a = 1000, b = 1000; long int c = a * b;" work?

3.16 Can I use ?: on the left-hand side of an assignment expression?