How to use long data type in C?

Question

I am a little confused by how long they have been working on C.

If I request the maximum long value in Java, I get the number in quintillion. If I ask for it in C, signed or unsigned, it's in billions.

Java is built on C ... so where is the difference?

I also tried to represent literals with long long values, unsigned / signed long values ​​and long int. None of them seem to handle mid-billion numbers. What for? Am I mistaken?

Answer 1

C long int. . Java, long 64 .

C99 int64_t, stdint.h, , .

Answer 2

C long long. 64 .

Answer 3

, GNU MP Bignum: http://gmplib.org/ , .