Why is the 'square' not normal?

Question

https://code.sololearn.com/cSZ4aM8B430V/?ref=app

Answer 1

Wah Wah Shwe(와와쇄) Macros aren't functions . they are just like copy-pasting during compile time.

#define sqr(x) x*x
During compile time compiler will replace every sqr(x) with x*x

Like
sqr(5+2) => 5+2*5+2

Answer 2

Wah Wah Shwe(와와쇄)
Define like this
#define sqr(x) (x)*(x)

Answer 3

YUGRAJ, I tested like this. But the answer is the same. I've to learn C language again to understand this.