What is the difference between stdint.h and inttypes.h?
If none of them is used, uint64_t is not recognized but with either of them it is a defined type.
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What is the difference between stdint.h and inttypes.h?
If none of them is used, uint64_t is not recognized but with either of them it is a defined type.
See the wikipedia article for inttypes.h.
Use stdint.h for a minimal set of definitions; use inttypes.h if you also need portable support for these in printf, scanf, et al.