#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "miniunit.h"

// Note for HW06:  If you have conditional jump based on uninitialized
// value, there's a very good chance you forgot to write the '\0' at the
// end of your string.  Make sure you understand why this error happens.


#define mu_check_strings_eq(s1, s2) \
    mu_check(strcmp((s1), (s2)) == 0)
    // Tip:  In your mu_check(…) you should have parenthesized (condition)
    //       in the rhs of the #define so that you will have no precedence
    //       issues here.  If this doesn't make sense, just do it anyway.
    //
    // strcmp(…) returns 0 when the strings are EQUAL.


char* mystrdup(char* s) {
    // Find LENGTH
    size_t len = 0;
    while(s[len] != '\0') { // while(…) { … } is a kind of conditional jump
        len++;
    }

    // ALLOCATE memory for new string
    char* new_s = malloc((len + 1) * sizeof(*new_s)); // Don't forget '*'
    // !!! Don't forget to include the null terminator in your calculation
    //     of how many bytes to allocate with malloc(…).
    //
    // Recommendation: Allocate only as many bytes as you need--and no more.

    // POPULATE new string with characters, including the null terminator
    for(int i = 0; i < len; i++) {
        new_s[i] = s[i];
    }
    new_s[len] = '\0';  // Don't forget the null terminator!!!
    return new_s;
}



int _test_easy() {
    mu_start();
    
    // This is just a step toward a better solution.

    char* expected = "protein";
    char* actual   = mystrdup(expected);
    mu_check_strings_eq(expected, actual);
    free(actual);

    mu_end();
}


int main(int argc, char* argv[]) {

    mu_run(_test_easy);

    /* char* s1 = mystrdup("protein"); */
    /* //printf("s1 == \"%s\"\n", s1); */
    /* log_str(s1); */
    /* free(s1); */

    return EXIT_SUCCESS;
}
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