some one can explain it?

Question

num>>2

Answer 1

• Multiply by a power of 2
x = x << 1; // x = x * 2
x = x << 6; // x = x * 64

• Divide by a power of 2
x = x >> 1; // x = x / 2
x = x >> 3; // x = x / 8

• https://www.sololearn.com/learn/4087/?ref=app
• https://www.sololearn.com/learn/4086/?ref=app
• https://code.sololearn.com/cRRF49cpSTq7/?ref=app
• https://code.sololearn.com/cO9xpzBIiQLn/?ref=app

Answer 2

https://www.sololearn.com/learn/4086/?ref=app

Signed Right shift operator (>>) –

Answer 3

thank you!
it's good explanations.