Do Not Modify int main(). Change only unsigned replace_byte().

Question:

Suppose we number the bytes in a w-bit word from 0 (least significant) to w/81 (most significant). Write code for the following C function, which will return an unsigned value in which byte i of argument x has been replaced by byte b : unsigned replace_byte (unsigned x, int i, unsigned char b); Here are some examples showing how the function should work: \[ \begin{array}{l} \text { replace_byte }(0 \times 12345678,2,0 \times A B)->0 \times 12 A B 5678 \\ \text { replace_byte }(0 \times 12345678,0,0 \times A B) ightarrow 0 \times 123456 \mathrm{AB} \end{array} \]