Prototype
Declared in string.h
The C89/C99 prototype is:
void *memset(void *s, int c, size_t n);
Description
The memset function copies the value of c (converted to an unsigned char) into each of the first n characters of the object pointed to by s.
Return value
The memset function returns the value of s.
Implementation
In standard C, this can be implemented as:
#include <stddef.h> /* size_t */ void *memset(void *s, int c, size_t n) { unsigned char* p=s; while(n--) *p++ = (unsigned char)c; return s; }
Compilable unit, portable C90 in implementation namespace; public domain; past reviewers: none; current reviews: none
References
- The C Standard, 7.21.6.1 (C99 numbering)
- FAQ question 7.31 What's the difference between
calloc
andmalloc
?