How are comments written and used in a C program?

"Comments can be written in a C program either as a single line using two forward slashes, //comment or as a multiline comment using a combination of forward slash and asterisk: /* comment */. With a single line comment, everything on the line after the forward slashes is ignored. With a multiline comment, everything between the forward slash/asterisk is ignored. Comments are ultimately ignored by the compiler so the amount of comments do not have an effect on the final executable code. Consider the following example.\n\n1 //this is a single line comment\n\n2 int x; //this is also a single line comment, but after some code\n\n3\n\n4 /*\n\n5 This is a comment that can\n\n6 span multiple lines to format the comment\n\n7 message more clearly\n\n8 */\n\n9 double y;\n\nMost code editors and IDEs will present comments in a special color or font to distinguish them from the rest of the code (just as our example above does). Failure to close a"