Data arrays are used for orderly storage of one type of data. The use of data arrays allows you to structure the whole program code. Data sets will often be used to store the binary values of the seven-segment indicator numbers. In contrast to the function, the array identifier is a square bracket, inside which the data is separated by a comma.
Also in this video, the use of the for loop operator is considered. This operator, which is quite applicable in many programs of microcontrollers, allows solving several problems at a minimum amount of code.