#include <stdio.h>

char buf_2[50];

int
main()
{
        char *buf_1 = "\\\\?\\whats going on";

        sscanf(buf_1, "\\\\?\\%s", buf_2);

        printf("buf_1 = %s\n", buf_1);
        printf("buf_2 = %s\n", buf_2);

        printf("Thats all folks... !\n");

        return 0;

}

char *buf_2=buf_1;

if (!memcmp(buf_2,"\\\\?\\",4)) buf_2+=4;