please help me to learn the c language with the code. Thanks

Exercise 3.29. Implement the following specification: 1 Comp are s stri and str2 according to dictionary (aka, 2 ez i c o graphic order where characters are ordered by 3 their ASCII values. Returns -1 if stri comes before 4 str2 0 if either stri or str2 is NULL or if they are 5 equal and 1 if stri comes after str2 6| 7 int str cmp (char str 1 char str2) For example, consider the following unit test in strcmp-test.c: 1 include