What are comma operators used for?

Question

They can be used in two ways
1 to seperate two expressions
2 to combine a block
Like,. Int a=( a=2,b=3,a+b);
cout<<a;
Output:5
Here, i want to know some better applications in practical programs..

Answer 1

The commas are used to separate your parameters, variables, ect.

Answer 2

Comma operator works from left to right, if used consequently. It assign values from left.