HI all,

Does the U in at the end of 1234U signify that it is unsigned?

The kind of number it is a uint64_t. Does this mean it is an usigned integer 64 bit?

What does the _t at the end mean.

Thanks for the help.

> Does the U in at the end of 1234U signify that it is unsigned?
Yes.

> The kind of number it is a uint64_t. Does this mean it is an usigned integer 64 bit?
Probably, though perverse people could equally write typedef double uint64_t; and the compiler might not complain until later.

> What does the _t at the end mean.
It's often used to signify that it is something which is a typedef for something else.

It is a standard type in C99, but I think it could be anything in C89 (older C) or C++.