Question

It is a value in programming that all
the variable must be declared______
they are used in the program.​

Answer 1

Answer:They are called variables because the represented information can change but the ... In general, a program should be written with "Symbolic" notation, such that a ... (valid) values are used in place of the variables, the expression is still true. ... A variable should be named to represent all possible values that it might contain.

Explanation: