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Fix base case for ex02.5 add_bigint #3

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Fix base case for ex02.5 add_bigint #3

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13 changes: 7 additions & 6 deletions exercises/ex02.5/bigint.c
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Original file line number Diff line number Diff line change
Expand Up @@ -111,16 +111,17 @@ void add_bigint(BigInt x, BigInt y, char carry_in, BigInt z) {
b = *y;
}

// if no more digits and no carry to apply, we're done
if (dx == 0 && dy == 0 && carry_in == '0') {
*z = '\0';
return;
}

// printf("%c %c %c\n", a, b, carry_in);
add_digits(a, b, carry_in, &total, &carry_out);
// printf("%c %c\n", carry_out, total);

// if total and carry are 0, we're done
if (total == '0' && carry_out == '0') {
*z = '\0';
return;
}
// otherwise store the digit we just computed
// store the digit we just computed
*z = total;

// and make a recursive call to fill in the rest.
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