memset
接口形式：
void * memset ( void * ptr, int value, size_t num );
用给定的值value填充ptr所指的内存块。
Sets the first num bytes of the block of memory pointed by
ptr to the specified value (interpreted as an unsigned char).
Parameters
- ptr
- Pointer to the block of memory to fill.
- value
- Value to be set. The value is passed as an int, but the function fills the block of memory using the
unsigned char conversion of this value.
- num
- Number of bytes to be set to the value.
size_t is an unsigned integral type.
Return Value
ptr is returned.
例子：
/* memset example */
#include <stdio.h>
#include <string.h>
int main ()
{
char str[] = "almost every programmer should know memset!";
memset (str,'-',6);
puts (str);
return 0;
}
output：
------ every programmer should know memset!
memset函数
原文：http://blog.csdn.net/chenlei0630/article/details/41802497
