Task: 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 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"
andpattern = "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)
To test the implementation, enter the tests/
directory and run:
make check
In case of a correct solution, you will get an output such as:
test_no_appearances ........................ passed ... 33
test_one_appearance ........................ passed ... 33
test_multiple_appearances ........................ passed ... 34
Total: 100/100
If you’re having difficulties solving this exercise, go through this reading material.