#include <stdio.h>
#include <regex.h>        
#include <stdlib.h>
 
int main(){
 
	regex_t regex;
	int reti;
	reti = regcomp(&regex, "([0-9a-fA-F]{8}( |$))+$", REG_EXTENDED);
	if (reti) 
	{
	    fprintf(stderr, "Could not compile regex\n");
	    exit(1);
	}
 
	reti = regexec(&regex, "00001206 ffffff00 00200800 00001044", 0, NULL, 0);
	if (!reti) 
	{
	    printf("Match");
	}
	else if (reti == REG_NOMATCH) {
	    printf("No match bla bla\n");
	}  
    return 0;
}

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