What will be the value of C, in C = x++ + ++x + ++x + x, if x = 10 ?

Explanation (Step-by-step):

Initial value: x = 10

Expression: C = x++ + ++x + ++x + x

Evaluate from left to right:

1. x++ (post-increment)

   • Value used = 10

   • Then x becomes 11

2. ++x (pre-increment)

   • x becomes 12

   • Value used = 12

3. ++x (pre-increment)

   • x becomes 13

   • Value used = 13

4. x (final term)

   • Current value = 13

Now add all values:

C = 10 + 12 + 13 + 13 = 48

• x++ means: use the current value, then increment x.

• ++x means: increment x first, then use the new value.

Note:

++ has higher precedence than +, but precedence does not determine evaluation order. Similarly, associativity (right-to-left for ++/--) only defines grouping, not execution order.

Right-to-left associativity means expressions are grouped as:

a = b = c  →  a = (b = c)

It does not mean execution happens from right to left.

In the given explanation, values are considered step-by-step as:
x++ → 10 (then x = 11)
++x → 12
++x → 13
x → 13

So,
C = 10 + 12 + 13 + 13 = 48

Hence, as per this explanation approach, the answer is 48.