#include <stdio.h>

void mksize (float bytes, char *ret) {
        if (bytes < 1024)
                sprintf(ret, "%.f B", bytes);
        else if (bytes < 1048576)
                sprintf(ret, "%.2f kB", bytes / 1024);
        else if (bytes < 1073741824)
                sprintf(ret, "%.2f MB", bytes / 1048576);
        else if (bytes < 1099511627776)
                sprintf(ret, "%.2f GB", bytes / 1073741824);
        else
                sprintf(ret, "%.2f TB", bytes / 1099511627776);
}


void main() {
        char out[255];
        mksize(1572864, out);
        printf("%s\n", out);
}