What's the difference between impact and non-impact printers?

the difference between Impact and non-impact printers is that impact printers are used for printing documents. when non-impact printers are the current form of printers that are extensively used.

a variable of array type holds a reference of object

array are commonly used in computer program to organize data so that a related set of values

array are using zero base indexing it start with 0.

all component of array have same type, two different types doesn't use in single array

if array are store 10 quantities its index value varies from 0 to 9.

it stores 1st quantity value in index value 0 and this process will same till index value 9.

go to edit profile and on the ; eft hand side it has a bunch of options and the very last on says profile picture, click the blue edit sign next to it