Difference between c and embded c?

Answer 1

In the C standard, a standalone implementation doesn't have to provide all of the library functions that a hosted implementation has to provide. The C standard doesn't care about embedded, but vendors of embedded systems usually provide standalone implementations with whatever amount of libraries they're willing to provide.

and also

Embedded environment, sometime, there is no MMU, less memory, less storage space. In C Programming level, almost same, cross compiler do their job.