Remove a substring in C given positions of substring

Question

Let\'s say I have a char *example that contains 20 chars. I want to remove every char from example[5] to example[10] and then fix up the a

Answer 1

memmove(&example[5], &example[11], strlen(example) - 11 + 1);

Note that the behavior of memcpy is undefined when the memory blocks overlap, so memmove is more appropriate here.