What's the difference between ' ' and " "

Question

Sry if this question has been already done, but I haven't found it with the filter so I guess it isn't.

Answer 1

A single quote is treated as a single character, while double quotes create a string literal.

 'a' is a single character literal, while "a" is a string literal which includes an 'a' and a null terminator.

Answer 2

' ' (single quotes) is generally used for characters while " "( double quotes) is used for string

Answer 3

Sree so how does it affect to my programm whether if I choose one or another?