strcmp

Your task is to implement the C Standard Library function strcmp. strcmp takes in two const char * and returns an integer depending on the differences between the two strings.

strcmp works by sequentially going through both strings and comparing each character. If char 1 < char 2, then we would return -1. If char 1 > char 2, then we would return 1.

However, If both strings equal each other, then we would return 0.

For example,

strcmp("hi", "hi") -> 0
strcmp("a", "b") -> -1

The output from your program should look exactly like this:

$ dcc strcmp.c -o strcmp
$ ./strcmp "hello" "hello"
0

Assumptions/Restrictions/Clarifications

You should not use the library implementation of strcmp as that defeats the whole purpose of this exercise.

It is guaranteed that your function is only expected to return 0, 1, and -1.

CSE Autotest

When you think your program is working, you can use CSE autotest to test your solution.

$ 1511 csesoc-autotest strcmp

Solution

You can view the solution code to this problem here.