u15D78 - Online C Compiler & Debugging Tool

#include <stdio.h>

int main(void)
{
    short var_1;
    int var_2;
    long long var_3;

    if (scanf("%hd, %d, %lld", &var_1, &var_2, &var_3) != 3) {
        printf("Input error");
        return 0;
    }

    unsigned char var_ar[sizeof(var_1) + sizeof(var_2) + sizeof(var_3)] = {0};
    int counter = 0;
    unsigned char *ptr_1 = (unsigned char *)&var_1;
    unsigned char *ptr_2 = (unsigned char *)&var_2;
    unsigned char *ptr_3 = (unsigned char *)&var_3;

    for (int i = 0; i < sizeof(var_1); i++) {
        var_ar[counter] = *(ptr_1 + i);
        counter++;
    }

    for (int j = 0; j < sizeof(var_2); j++) {
        var_ar[counter] = *(ptr_2 + j);
        counter++;
    }

    for (int p = 0; p < sizeof(var_3); p++) {
        var_ar[counter] = *(ptr_3 + p);
        counter++;
    }

    for (int t = 0; t < sizeof(var_ar) / sizeof(*var_ar); t++) {
        printf("%u ", var_ar[t]);
    }

    return 0;
}