String Construction

#include <stdio.h>
int main()
{
    char filename[] = "update.txt";
    char name[16];
    int x;
    /* initialize the name[] buffer with dots */
    for( x=0; x<16; x++ )
        name[x] = '.';
    /* extract first part of the filename */
    x = 0;
    while( filename[x] != '.' ) {
        name[x] = filename[x];
        x++;
    }
    /* output result */
    printf("Extracted name '%.16s' from '%s'\n", name, filename);
    return(0);
}