Question

is 8std a valid identifier, if not why​

Answer 1

Answer:

is 8 class is valid identifier because they just paper into high school

Step-by-step explanation:

if not means they are still small the valid identifier should have been passed 18 Years

Answer 2

Answer:

Identifiers can be a combination of letters in lowercase (a to z) or uppercase (A to Z) or digits (0 to 9) or an underscore _ . Names like myClass , var_1 and print_this_to_screen , all are valid example. An identifier cannot start with a digit. 1variable is invalid, but variable1 is perfectly fine.