What is the answer? (I think the only once:... is answer)

Question

How many times should a data type be mentioned for a variable?

When printing a variable's value

When entering variable's value using cin

Everywhere the variable is used

Only once: when declaring the variable

Answer 1

Alright next time maybe mention the language I guess ur talking about either C ore C++.
Changing ore Adding something to a var happens all the time there is no real answer for you question. If you are talking about printing the var there are different ways to do this.
Maybe when Calculating the average of several numbers in an array you wana print int sum and ore the average.
So:
print sum and (sum/sizeof(array))

Answer 2

3