Comma Operator in C++

To combine expressions and form a single expression for purposes like updating multiple variables in loops.

Comma operator in C++.

It combines multiple expressions in the same line.

It evaluates expressions from left to right and returns the result of the last expression.

The comma acts as a separator in variable declarations.

An expression is something that evaluates down to a value.

The result of the last expression is returned.

It combines the expressions y++, 20, and 30 to evaluate down to 30 and assign it to variable x.

The values 30 and 3 are displayed on separate lines.

It is mainly used in loops, especially in 'for' loops as the update expression.

By combining expressions like I++ and J++ using the comma operator in the update section of a 'for' loop.

The output 30 and 3 are displayed on the screen.

It uses the post-increment operator, initially returning 2 and updating y to 3.

To combine multiple expressions, allowing multiple loop variables to be updated in a single line.

A single expression from multiple expressions.

It moves the output to the next line after printing the value.

In expressions, it acts as an operator, while in declarations, it acts as a separator.

To combine expressions and form a single expression for purposes like updating multiple variables in loops.

Comma operator in C++.