Mine

#include <string.h>#include <stdio.h>const char* hexstr="48494A4F00";int main(int argc, char **argv) {    char result[10];    int v;    for(int i = 0; i < strlen(hexstr)>>1; i++) {        sscanf(&hexstr[i<<1], "%2x", &v);        result[i] = v;    }    printf("RES: %s\n", result);}