better_truncate.c

#include<stdlib.h>
#include<strings.h>
#include<stdio.h>

int main() {
    char *sRaw = "02010606FFCDAB641001565";
    printf("All [%s]\n", sRaw);
    char at17 = sRaw[17];
    printf("17 is [%c]\n", at17);
    char at16 = sRaw[16];
    printf("16 is [%c]\n", at16);
    char battery[5] = {'0', 'x', sRaw[14], sRaw[15], '\0'};
    printf("Battery hex is [%s]\n", battery);
    int batteryDecimal = strtol(battery, NULL, 16);
    printf("Battery decimal is [%d]\n", batteryDecimal);
    return 0;
}