/* Convert sequence of hex digits on command line into a string, terminated by \n */
#include <stdio.h>
int main(int argc, char *argv[]) {
int i;
for (i = 1; i < argc; i++) {
unsigned long dig = strtoul(argv[i], NULL, 16);
putchar((char) dig);
}
putchar('\n');
return 0;
}