what is case sensitivity?

Question

which are following variableis legal in c++ ?

Answer 1

Case sensitive means that there is a distinction between lowercase and uppercase. For example, "Qwerty" is not the same as "qwerty". Case insensitive is the opposite.

Answer 2

case sensitive means ,in c++ a and A is different.
means capital and small letters are different

Answer 3

capital and small letters are different. A and a is different

Answer 4

case sensitive means small letters (a-z called lower case alphabets) and capital letters(A-Z called upper case letters) will be like 2 different forms of letters for the c++ compiler
eg: if u use int mohit in the programme you should continue with int mohit, incase u type int MOHIT the compiler will treat it as another identifier.

Answer 5

when we want to declare negative values it is better to use signed.It take both -ve and +ve values.but unsigned only takes +ve