What it use sum =sum+1;

Question

What it use sum =sum+1; if it dont have any function why do we need to put it in the code

Answer 1

This increments sum by one.

Answer 2

thnx

Answer 3

you can use it for counter based loops e.g.:
for (int i=0;i<10;){
do somthing ....

i=i+1;
// or you write i++;
}