No need to start a new topic, replying the the previous one would have done.
Why do you think increasing the number of elements in a and c would fix the problem? What do you hold in these arrays?
Try this test case
Ya! you are right I did a wrong thing. Sooo… what should i do increase individual capacity of units in array to satisfy problem need
Use some structure capable of holding 10000 digits, such as a string, or byte array. You’ll then need to create a multiplication function to work with that structure.