memset

Name

memset - fills memory with a constant byte

Library

libc.lib

Synopsis

#include <string.h>

void * memset (void *b, int c, size_t len);

Detailed description

The memset function writes len bytes of value c (converted to an unsigned char) to the string b.

Examples

#include <string.h>
#include <stdio.h>
int main()
{
    char one[50];       
    strcpy(one, "abcdefgh");
    printf("String before memset %s\n",one);
    memset(one+1, 'x', 3);
    printf("String after calling memset first time %s\n",one);          
    memset(one+2, 'y', 0);
    printf("String after calling memset second time %s\n",one);
    return 0;   
}

Output

String before memset abcdefgh
String after calling memset first time axxxefgh
String after calling memset second time axxxefgh

Return value

The memset function returns its first argument.

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