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# memset

Buffer Manipulation Functions

Sets n bytes of a buffer to a given character.

    void *memset( void *buffer, int c, size_t n);

buffer | Pointer to block of data to be filled with c.
c | The character placed in buffer.
n | The number of bytes in buffer set as c.

## Return Values

Returns buffer, pointer to block of data to be filled with c.

For memset details, refer to your C language documentation.

## Example

The following example uses memset to fill a structure, about_app, with zeros, before initializing it.

#include <string.h>

    struct about_app {
         char *version;
         int field1;
         int field2;
    };

    // Global scope
         struct about_app a;
         a.field1 = 12;
         a.field2 = 13;

    // Set all fields to 0
         memset(&a, 0, sizeof(struct about_app));

    // Show that fields are set to 0
         lr_output_message("After memset field1=%d field2=%d", a.field1, a.field2);

    // Initialize the structure
         a.version = "app version 1.0";
         a.field1 = 5;
         a.field2 = 6;
         lr_output_message("Now, field1=%d field2=%d", a.field1, a.field2);

    Example: Output:
    Action.c(18): After memset field1=0 field2=0
    Action.c(23): Now, field1=5 field2=6

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