Commenting and UnCommenting a Program C Programming

Comment statements are non-executable statements. These statements are used to increase the readability and understanding of the program. A comment statement can be included anywhere in the program. There are two types of comments. they are,

1) Multiline comment
2) Singleline comment

All multiline comments should start with /* and end with */. No  space is allowed between * and /.
All singleline comments should start with //. No space allowed between /and /.

Example:

1) /* program to find the sum of three
numbers */

2) // program by Jhon, Ramu and Rahmon.