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POchar to system.string in windowsforms
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copied!<p>I wrote a program to write numbers in different bases (base 10, binary, base 53, whatever...)</p> <p>I inicially wrote it as a win32 console application, in visual c++ 2010, and then converted it to a Windows Form Application (I know, I know...)</p> <p>In the original form, it worked perfectly, but after the conversion, it stopped working. I narrowed down the problem to this:</p> <p>The program uses a function that receives a digit and returns a char:</p> <pre><code>char corresponding_digit(int digit) { char corr_digit[62] = {'0','1','2','3','4','5','6','7','8','9', 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P' ,'Q','R','S' ,'T','U','V','W','X','Y','Z', 'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p' , 'q','r','s' ,'t','u','v','w','x','y','z'}; return corr_digit[digit]; } </code></pre> <p>This function takes numbers from 1 to 61, and return the corresponding character: 0-9 -> 0-9; 10-35 -> A-Z; 36-61 a->z.</p> <p>The program uses the function like this:</p> <pre><code>//on a button click //base is an integer got from the user String^ number_base_n = ""; if(base == 10) number_base_n = value.ToString(); else if(base==0) number_base_n = "0"; else { int digit, power, copy_value; bool number_started = false; copy_value = value; if(copy_value > (int)pow(float(base), MAX_DIGITS)) //cmath was included number_base_n = "Number too big"; else { for(int i = MAX_DIGITS; i >= 0; i--) { power = (int)pow(float(base), i); if(copy_value >= power) { digit = copy_value/power; copy_value -= digit*power; number_started = true; number_base_n += corresponding_digit(digit); } else if (number_started || i==0) { number_base_n += "0"; } } } } textBox6->Text = number_base_n; </code></pre> <p>After debugging a bit, I realized the problem happens when function corresponding_digit is called with digit value "1", which should return '1', in the expression</p> <pre><code>//number base_n equals "" number_base_n += String(corresponding_digit(digit)); //number_base_n equals "49" </code></pre> <p>number_base_n, starting at "", ends with "49", which is actually the ASCII value of 1. I looked online, and all I got was converting the result, with String(value) or value.ToString(), but apparently I can't do</p> <pre><code>number_base_n += corresponding_digit(digit).ToString(); </code></pre> <p>I tried using an auxiliar variable: </p> <pre><code>aux = corresponding_digit(digit); number_base_n += aux.ToString(); </code></pre> <p>but I got the exact same (wrong) result... (Same thing with String(value) )</p> <p>I fumbled around a bit more, but not anything worth mentioning, I believe. So... any help?</p> <p><em>Also: base 10 and base 0 are working perfectly</em></p> <p>Edit: If the downvoter would care to comment and explain why he downvoted... Constructive criticism, I believe is the term.</p>

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