Question

State whether the following variables are valid or invalid give reason if invalid.

1. DateOfAdmission

2. 8ICSE

3. Ip address

4. _grandTotal

Answer 1

Answer:

2nd and 4th variable names are invalid, first and 3rd are valid

Explanation:

the 2nd variable name i.e. 8ICSE starts with a number that is 8 and according to the rules a variable name can't start with a number.

the 4th variable name i.e. _grandTotal starts with an undescore ..a variable name also shouldn't start with special characters.