C Programming/C Reference/string.h/memset
The C language function included in C standard library (stdlib), which sets given bytes in memory.
#include <string.h> void *memset(void *s, int c, size_t n);
The memset() copies c into each of the n first bytes of the object pointed to by s.
The function returns the pointer s. There is no defined value to return when an error occurs.