Question

Which of the following is true for variable names in C ?

Answer 1

Explanation:

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To name a variable in C language, the contenders need to follow some specific rules. A variable name can have uppercase and lowercase letters, digits and underscore only. The first letter of a variable should be either a letter or an underscore. There is no rule on length of the variable.

Answer 2

Answer:

Variable name cannot start with a digit is true for variable names in C.

Explanation:

Variable names must not begin with a digit. The variable name in C cannot begin with a digit, according to the syntax.

Variable naming guidelines:

• Variable names can only contain letters (uppercase and lowercase), digits, and underscore.

• A variable's first letter should be either a letter or an underscore.

• There are no restrictions on the length of a variable name (identifier).

The only characters that can begin a variable name are the alphabet and underscore. It cannot start with a digit. There can be no whitespace within the variable name. Variable names cannot contain any reserved words or keywords, such as int, goto, and so on.