Can anyone try to explain me how the ans is coming 65??

Question

https://code.sololearn.com/cz917fkgeyCf/?ref=app

Answer 1

x will be expanded by preprocessor with 10+5 then
int a= x*x
is same like
int a= 10+5*10+5

and because multiplication have precedence over addition, a will be 10+(5*10)+5==10+50+5= 65

Answer 2

I thought x will be 15
Thanks KrOW

Answer 3

You can check also the thread :
https://www.sololearn.com/Discuss/1716100/why-this-code-outputs-9-7-but-not-9-16

for more examples ...