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POConverting numbers by Euclidean algorithm and the Horner's method
 

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  1. POConverting numbers by Euclidean algorithm and the Horner's method
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    <p>I have some trouble with my code in C. It doesn't convert the number as it should be. This is the euclidean algorithm to transform a given number to another number with a different base. "precision" is the amount of digits after comma.</p> <pre><code>static char* euclid(float number, int base, int precision) { //create a buffer for holding the resulting string char* resultString = createBuffer(number, base, precision); int numbTemp; int numbDiv; float maxExponent = 0; while (number &gt;= pow((float)base, (float)maxExponent)) { maxExponent++; } maxExponent--; if (maxExponent &lt; 0) { maxExponent = 0; } while (maxExponent &gt;= 0) { numbDiv = number / pow(base, maxExponent); *resultString += converIntToChar(numbDiv); numbTemp = numbDiv * pow(base, maxExponent); number -= numbTemp; maxExponent--; if(maxExponent &lt; 0 &amp;&amp; precision &gt;0) { *resultString += ","; while(precision &gt; 0) { numbDiv = number / pow(base, maxExponent); numbTemp = numbDiv * pow(base, maxExponent); *resultString += convertIntToChar(numbDiv); number = number - numbTemp; maxExponent--; precision--; } } } return resultString; } </code></pre> <p>converting number to character:</p> <pre><code>static char convertIntToChar(int number) { if (0 &lt;= number &amp;&amp; 10 &gt; number) { return number + '0'; } else if (16 &gt; number) { return number - 10 + 'A'; } else { return '\0'; } } </code></pre> <p>The input for the "number" is always a number to the base 10. I tried it for example with 170 and as result I wanted to have 170 (which is to the base 10) returned as a number to the base 16, which is AA. But what I get as result is �. Could you help me to find the the problem. Besides I use linux. So I use the gcc compiler. Also I am trying to implement Horner's method and I get the same result as above (�) My code for the Horner's method.</p> <pre><code>static char* horner(float number, int base, int precision) { // create a buffer for holding the resulting string. char* resultString = createBuffer(number, base, precision); int numbDiv = 0; int numbTemp = 0; int numbConv = 0; do { numbDiv = number / base; numbTemp = numbDiv * base; numbConv = number - numbTemp; number = numbDiv; *resultString += convertIntToChar(numbConv); } while (number != 0); return resultString; } </code></pre> <p>regards Hagi</p>
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    1. COWhen I enter a number with comma, I get again this symbol �. Just an example, when I enter 15741.233 (to the base 10) I get returned 3D7D�3 (to the base 16, with precision 4 (digits after comma)) but it should be 3D7D.3BA5. I don't know why it does that. Does anyone know why?
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    2. COI did not use single quote characters. Now, I get 3D7D.3 as result, but there are still 3 digits missing. Does anyone know why?
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