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strlen Function Key Characteristics Strings terminate with '\0', and the function counts characters before this termination marker (excluding '\0') The input string must end with '\0' Returns size_t type, which is unsigned (common source of errors) Requires string.h header inclusion Basic Usage Example #include <stdio.h> #include <st ...

sizeof Operator The sizeof operator represents a compile-time unary operator that yields the size in bytes occupied by an object or type. The result is a value of type size_t, which is an unsigned integral type capable of representing the size of any object in memory. Key characteristics of size_t: Machine-independent unsigned type Large enoug ...