$1.$ Define type error. Why are the pointers of most languages restricted to pointing at a single type variable?

$2.$differentiate between Enumeration and Sub$-$range types with example

$3.$What three concepts are the bases for object$-$oriented programming?

$4.$Explain two reasons why pure interpretation is an acceptable implementation method for several recent scripting languages.

$5.$What are the three fundamental fcatures of an object$-$oriented programming language?

$6.$What is the difference between a sentence and a sentential form?

$7$ Categorize variables by lifctime. Give examples.

$8.$Name few primitive types in programming languages. Briefly explain two of them.

$9.$When do you call a programming language as strongly typedt? Why c and C$++$ are not strongly typed?

$10.$Differentiate between the general features of JavaScript and PHP Language

$11.$ Which programming language involved history's largest design effort? Why did it lose its popularity?

$12.$Describe the basic concept of denotational semantics.

$13.$Categorize type conversion with example

$14.$What is the action of the Scheme functions "CAR$*$ and CDR$\text{'}?$ Give Example.

$15.$Categorize array operations in different programming languages,