// IMPLEMENTATION FILE
//
// Okay to copy/adapt anything in this file for Spring 2021.  You are
// responsible for ensuring that it is correct.

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

void print_integer(int n, int radix, char* prefix) {
    int i = 0;
    // while(prefix[i] == '\0') {   // BUG!!!!
    while(prefix[i] != '\0') {  // stop if the current character is the null terminator
        fputc(prefix[i], stdout);
        i += 1;
    }
    // REMEMBER:  In memory, a string (e.g., "Zebra + Panda = ") is stored as
    // an array of characters (char) followed by a null terminator ('\0') which
    // tells C functions that you are at the end, since there is no other way to
    // know the length of a string.
    //
    // FACT:  Every for loop can be written as a while loop.

    if(n <= 9) {
        fputc('0' + n, stdout);    // GOOD
    }
    else {
        // fputc('0' + n + 49, stdout);    // BAD
        fputc('a' + (n - 10), stdout);    // GOOD
    }
    // fputc(48 + n, stdout);  // BAD!!!! unclear.  violates code quality standard

    // WARNING: DO NOT USE AN INTEGER LITERAL IF YOU ARE REFERRING TO A CHARACTER.
    // fputc(48, stdout);   // BAD!!!!!!!!!
}
// NO RETURN STATEMENT in a function that returns void.