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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 ...

String Length Functions strlen Unbounded String Functions strcpy strcat strcmp Bounded String Funcsions strncpy strncat strncmp String Search Functions strstr strtok Error Reporting Functions strerror Character Classification Functions Character Case Conversion Memory Operation Functions memcpy memmove memcmp memset String Length Functions strl ...