How can we use numbers with very very long digits (about 100digits)in c?

Answer 1

Array of integers each holding -9999 to 9999. With same functions Petr mentioned.

Answer 2

You can actually try it for yourself. My compiler tells me "long long long" is literally too long. :>

Answer 3

long long is the biggest integer requiring 64 bits minimum. However, that is currently the maximum supported by any processor so it is also the current maximum.

Answer 4

As strings. If you want to be able to add, subtract our multiply it, you should write such functions.

Answer 5

can we write signed long long long long long integer?

Answer 6

what do you mean by array.i don't know array in C