Searches work by comparing primitive or structured data types. Therefore, it makes sense to begin this chapter with a section about comparisons.
Comparisons
In general, when discussing comparisons, you need to distinguish between numbers (including pointers), null-terminated character strings and unstructured blocks of memory, and everything else.
To compare numbers, C provides the relational operators ==, !=, >, <, >=, and <=, although, as you learned in Chapter 2, dealing with floating point numbers is tricky.
For unstructured blocks of memory and null-terminated character strings, C provides several functions, ...
