Deleting the First Occurrence of a Pattern from a String

You will solve this exercise starting from the delete-first.c file located in the drills/tasks/delete-first/support directory.

Given a string and a pattern, implement the delete_first(char *s, char *pattern) function that returns the string obtained by removing the first occurrence of the pattern in s.

NOTE: For s = "Ana are mere" and pattern = "re", the function should return the string "Ana a mere".

IMPORTANT: Warning

char *s = "Ana are mere"; // allocates the string in a read-only memory area (immutable content)
char s[] = "Ana are mere"; // allocates the string in a read-write memory area (modifiable content)

If you're having difficulties solving this exercise, go through this reading material.