How to copy a string with '/0'

Strcpy is a copy string and ends with \ 0 (that is, once the memory address copy process with a data value of 0 is stopped). The prototype of strcpy is char * strcpy (char * dest, const char * src) while memcpy copies the memory data of a specified n size after the given source and target, regardless of the copied content (not limited to characters). memcpy function prototype: www.2cto. comvoid * memcpy (void * dest, const void * src, size_t n); function: copy n Bytes from the starting position of the memory address indicated by the source src to the starting position of the memory address indicated by the target dest during the use of the memcpy function. Pay attention to dest initialization, error-prone