Explanation:
r=r*10+d shifts the previous value to the left (by multiplying by 10) and adds a new digit.
So imagine r = 123 and you want to append 4 to it.
First r is multiplied by 10, so you have 1230. Then you add 4, and get 1234.
The r variable builds up the reverse of s, so it starts at 0.
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Answer:
C
Explanation:
Every form of media has different resources.
You just click on a question and then you'll see the word "answer" at the bottom of the questions and click on the word to answer the question