Which function is used to create a copy of a string in C?

The function that is primarily used to create a copy of a string in C is strdup(). This function allocates sufficient memory for a new string, copies the contents of the source string into this newly allocated memory, and then returns a pointer to the duplicated string. This makes it convenient for scenarios where you need a separate copy of a string that can be modified independently of the original.

While strcpy() can also copy strings, it requires the destination buffer to be pre-allocated, which means you must manage the memory where the string is copied manually. If the destination buffer is not large enough, it can lead to buffer overflows. Therefore, while strcpy() is functional for copying strings, it is not the safest or most straightforward method to create a new copy of a string, as it does not handle memory allocation.

strncpy() works like strcpy(), but it allows you to specify the number of characters to copy, which can be useful for preventing buffer overflows. However, it can lead to issues where the destination string is not null-terminated if the source string is longer than the specified limit, which could cause problems when working with strings.

strcat() is used to concatenate (or